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Invertebrates are not ‘simple animals’, but they are indeed masters of economy: their small nervous systems contain many fewer nerve cells than those of even the tiniest vertebrates, yet these animals solve all of the same survival problems, can live in highly organized societies and can communicate complex messages. The goal of this article is to outline general features of the nervous systems of invertebrates, and to begin to ask how these tiny information-processing systems drive such diverse behaviour.
Invertebrates nervous-system-by-resty-samosa
Invertebrates nervous-system-by-resty-samosa
Resty Samosa
The vertebrate brain The vertebrate brain is the main part of the central nervous system. The brain and the spinal cord make up the central nervous system, In most of the vertebrates the brain is at the front, in the head. It is protected by the skull and close to the main sense organs. Brains are extremely complex and the part of human and animal body. The brain controls the other organs of the body, either by activating muscles or by causing secretion of chemicals such as hormones and neurotransmitters. Muscular action allows rapid and coordinated responses to changes in the environment. The brain of an adult human weights about 1300–1400 grams . In vertebrates, the spinal cord by itself can cause reflex responses as well as simple movement such as swimming or walking. However, sophisticated control of behaviour requires a centralized brain. The structure of all vertebrate brains is basically the same. At the same time, during the course of evolution, the vertebrate brain has undergone changes, and become more effective. In so-called 'lower' animals, most or all of the brain structure is inherited, and therefore their behaviour is mostly instinctive. In mammals, and especially in man, the brain is developed further during life by learning. This has the benefit of helping them fit better into their environment. The capacity to learn is seen best in the cerebral cortex. Three principles The brain and nervous system is essentially a system which makes connections. It has input from sense organs and output to muscles. It is connected in several ways with the endocrine system, which makes hormones, and the digestive system and sex system. Hormones work slowly, so those changes are gradual. The brain is a kind of department store. It has, all inter-connected, departments which do different things. They all help each other gather senses. Much of what the body does is not conscious. Basically, much of the body runs on automatic (breathing, heart beat, hungry, hair growth) adjusted by the autonomic nervous system. The brain, too, does much of its work without a person noticing it. The unconscious mind refers to the brain activities which are hardly ever noticed.
Comparision of brain in vertebrates
Comparision of brain in vertebrates
Govt.college,Nagda, ujjain.M.P
Auditory receptors
Auditory receptors
DinDin Horneja
Evolution of the nervous system
Evolution of the nervous system
Kykladen Gavarra
Comparative Anatomy - Respiratory System
Comparative Anatomy - Respiratory System
Emsi Onairpic
The integumentary system comprises the skin and its appendages. Skin + derivatives= Integument. It aims to protect the body from various kinds of damage, such as loss of water or damages from outside. The integumentary system in chordates includes hair, scales, feathers, hooves, and nails. It may serve to water proof, and protect the deeper tissues. Excrete wastes, and regulate body temperature. It is the attachment site for sensory receptors to detect pain, sensation, pressure, and temperature.
Integument of vertebrates
Integument of vertebrates
Govt.college,Nagda, ujjain.M.P
Nervous system in non chordate
Primitive,diffused & advance Nervous system in Non chordata.pptx
Primitive,diffused & advance Nervous system in Non chordata.pptx
SoniaBajaj10
Circulatory System Of The Vertebrates
Circulatory System Of The Vertebrates
Geonyzl Alviola
Recomendados
Invertebrates are not ‘simple animals’, but they are indeed masters of economy: their small nervous systems contain many fewer nerve cells than those of even the tiniest vertebrates, yet these animals solve all of the same survival problems, can live in highly organized societies and can communicate complex messages. The goal of this article is to outline general features of the nervous systems of invertebrates, and to begin to ask how these tiny information-processing systems drive such diverse behaviour.
Invertebrates nervous-system-by-resty-samosa
Invertebrates nervous-system-by-resty-samosa
Resty Samosa
The vertebrate brain The vertebrate brain is the main part of the central nervous system. The brain and the spinal cord make up the central nervous system, In most of the vertebrates the brain is at the front, in the head. It is protected by the skull and close to the main sense organs. Brains are extremely complex and the part of human and animal body. The brain controls the other organs of the body, either by activating muscles or by causing secretion of chemicals such as hormones and neurotransmitters. Muscular action allows rapid and coordinated responses to changes in the environment. The brain of an adult human weights about 1300–1400 grams . In vertebrates, the spinal cord by itself can cause reflex responses as well as simple movement such as swimming or walking. However, sophisticated control of behaviour requires a centralized brain. The structure of all vertebrate brains is basically the same. At the same time, during the course of evolution, the vertebrate brain has undergone changes, and become more effective. In so-called 'lower' animals, most or all of the brain structure is inherited, and therefore their behaviour is mostly instinctive. In mammals, and especially in man, the brain is developed further during life by learning. This has the benefit of helping them fit better into their environment. The capacity to learn is seen best in the cerebral cortex. Three principles The brain and nervous system is essentially a system which makes connections. It has input from sense organs and output to muscles. It is connected in several ways with the endocrine system, which makes hormones, and the digestive system and sex system. Hormones work slowly, so those changes are gradual. The brain is a kind of department store. It has, all inter-connected, departments which do different things. They all help each other gather senses. Much of what the body does is not conscious. Basically, much of the body runs on automatic (breathing, heart beat, hungry, hair growth) adjusted by the autonomic nervous system. The brain, too, does much of its work without a person noticing it. The unconscious mind refers to the brain activities which are hardly ever noticed.
Comparision of brain in vertebrates
Comparision of brain in vertebrates
Govt.college,Nagda, ujjain.M.P
Auditory receptors
Auditory receptors
DinDin Horneja
Evolution of the nervous system
Evolution of the nervous system
Kykladen Gavarra
Comparative Anatomy - Respiratory System
Comparative Anatomy - Respiratory System
Emsi Onairpic
The integumentary system comprises the skin and its appendages. Skin + derivatives= Integument. It aims to protect the body from various kinds of damage, such as loss of water or damages from outside. The integumentary system in chordates includes hair, scales, feathers, hooves, and nails. It may serve to water proof, and protect the deeper tissues. Excrete wastes, and regulate body temperature. It is the attachment site for sensory receptors to detect pain, sensation, pressure, and temperature.
Integument of vertebrates
Integument of vertebrates
Govt.college,Nagda, ujjain.M.P
Nervous system in non chordate
Primitive,diffused & advance Nervous system in Non chordata.pptx
Primitive,diffused & advance Nervous system in Non chordata.pptx
SoniaBajaj10
Circulatory System Of The Vertebrates
Circulatory System Of The Vertebrates
Geonyzl Alviola
Central nervous system: The central nervous system consists of the brain and spinal cord. The brain plays a central role in the control of most bodily functions, including awareness, movements, sensations, thoughts, speech, and memory. Some reflex movements can occur via spinal cord pathways without the participation of brain structures. The spinal cord is connected to a section of the brain called the brainstem and runs through the spinal canal. Peripheral Nervous System: Nerve fibers that exit the brainstem and spinal cord become part of the peripheral nervous system. Cranial nerves exit the brainstem and function as peripheral nervous system mediators of many functions, including eye movements, facial strength and sensation, hearing, and taste. The autonomic nervous system: The autonomic nervous system is a control system that acts largely unconsciously and regulates bodily functions, such as the heart rate, digestion, respiratory rate, pupillary response, urination, and sexual arousal. This system is the primary mechanism in control of the fight-or-flight response. The autonomic nervous system comprises two antagonistic sets of nerves, the sympathetic and parasympathetic nervous systems. The hypothalamus is the key brain site for central control of the autonomic nervous system, and the paraventricular nucleus is the key hypothalamic site for this control. Divisions of Nervous System: The vertebrate nervous system has three divisions: (i) A central nervous system comprising the brain and spinal cord. Its function is to receive the stimulus from the receptors and transmit its response to the effectors. Thus, it coordinates all the functions of the body. (ii) A peripheral nervous system consisting of cranial and spinal nerves arising from the brain and spinal cord respectively. It forms a connecting link between the receptors, central nervous system (CNS) and effectors. (iii) An autonomic nervous system made of two ganglionated sympathetic nerves, ganglia in the head and viscera, and their connecting nerves. The autonomic nervous system is often regarded as a part of the peripheral nervous system because the two are connected. But all the three divisions of the nervous system are connected intimately both structurally and functionally.
Peripheral and autonomic nervous system of vertebrates
Peripheral and autonomic nervous system of vertebrates
Govt.college,Nagda, ujjain.M.P
Webinar about Digestive system of various vertebrates and its functions.
Comparative Anatomy of Digestive System of Vertebrates
Comparative Anatomy of Digestive System of Vertebrates
RameshPandi4
ORIGIN OF CHORDATES Animal kingdom is basically divided into two sub kingdoms: Non-chordata- including animals without notochord. Chordata- This comprising animals having notochord or chorda dorsalis. Chordates were evolved sometime 500 million years ago during Cambrian period (invertebrates were also began to evolve in this period) . Chamberlain (1900) pointed out that all modern chordates possess glomerular kidneys that are designed to remove excess water from body. It is believed that Chordates have originated from invertebrates. It is difficult to determine from which invertebrate group the chordates were developed. Chordate ancestors were soft bodied animals. Hence they were not preserved as Fossils. However, early fossils of chordates have all been recovered from marine sediments and even modern protochordates are all marine forms. Also glomerular kidneys are also found in some marine forms such as myxinoids and sharks. That makes the marine origin of chordates more believable. Chordates evolved from some deuterostome ancestor (echinoderms, hemichordates, pogonophorans etc.) as they have similarities in embryonic development, type of coelom and larval stages. Many theories infers origin of chordates, hemichordates and echinoderms from a common ancestor.
Origin of chordata
Origin of chordata
Govt.college,Nagda, ujjain.M.P
INTERNATIONAL CODE FOR ZOOLOGICAL NOMENCLATURE TAXONOMIC TOOLS & NAMING SYSTEMATICS
ICZN.pptx
ICZN.pptx
GOPIKAVNAIR3
+FOLLOW COMMENTS
System digestive in reptiles
System digestive in reptiles
Shahida Aziz
Electric organs in fishes 1
Electric organs in fishes 1
Electric organs in fishes 1
Taniya07
1.Definition and basic concepts of Biosystematics, , Historical perspectives of Biosystematics and Taxonomy, Stages of taxonomic procedures-alpha taxonomy, Beta taxonomy and Gamma taxonomy, Neo taxonomy.
Biosystematics, and types of taxonomy
Biosystematics, and types of taxonomy
Datta Nalle
INTRODUCTION The term urogenital refers to something that has both urinary and genital origins. The word urogenital is used because the urinary and reproductive systems in males merge. These are grouped together because of their proximity to each other, their common embryological origin and the use of common pathways (ex. urethra). Kidneys and urinary ducts form the urinary system. The Urinary system performs two important homeostatic processes like excretion and osmoregulation. This system is intimately associated both anatomically, and in terms of embryonic origin with the genital system. The genital system includes the gonads which generate gametes and the genital ducts that serve as passages for the gametes. Though functionally different the two organ systems the urinary and the genital system are treated together as the urino- genital system, since both develop from the same segmental blocks of trunk mesoderm or adjacent tissues and share many of the ducts. Thus although the two systems have nothing common functionally they are closely associated in their use of common ducts and are studied under the broad heading of urinogenital system. The function of the excretory system is crucial in considering the possible environment of the ‘vertebrate life ’. Several main functions can be attributed to all vertebrate excretory systems: Excretion of nitrogenous waste products. Maintaining homeostasis with regard to ions (i.e. salt balance). Regaining valuable substances (glucose, salts, amino acids, etc.) Maintaining a physiological osmotic value (i.e. water balance). The excretory system is formed by a series of paired, segmental nephrons that begin with a nephrostome opening into the coelomic cavity. A pair of glomeruli per segment, supplied by branches from the aorta, projects into the coelomic cavity close to these nephrostomes. At a later stage of development, the glomerulus/nephrostome area becomes separated from the rest of the coelomic cavity by an epithelial fold. The nephrons connect to a duct that is formed by caudal growth of the most anterior nephric tubules. These paired urinary ducts open near the anal region.
Urino genitial system of vertebrates
Urino genitial system of vertebrates
Govt.college,Nagda, ujjain.M.P
This slide describes about the comparative structure of heart among vertebrates.
Comparative anatomy of heart structure
Comparative anatomy of heart structure
GunashreeKarunakhara
Brain of vertebrates
Brain of vertebrates
Brain of vertebrates
St. Xavier's college, maitighar,Kathmandu
Comparative Anatomy - Digestive System
Comparative Anatomy - Digestive System
Emsi Onairpic
Lecture 4 nervous system & behaviour
Lecture 4 nervous system & behaviour
Zeyra Zaha
this will help to understand nervous system of cuttlefish
nervous system of mollusk cephalopod (cuttlefish)
nervous system of mollusk cephalopod (cuttlefish)
NikitaSharma334
Sense organs are the specialized organs composed of sensory neurons, which help us to perceive and respond to our surroundings. There are five sense organs – eyes, ears, nose, tongue, and skin. External receptors (exteroceptors): sense organs for touch, smell, taste, sight and hearing. Internal receptors (interocepyors): these sense organs found in the body which detect the temperature, pain, hunger, thirst, fatigue and muscle position.
Receptor organs in vertebrates
Receptor organs in vertebrates
sunandakumre
Comparative Anatomy - Nervous System
Comparative Anatomy - Nervous System
Emsi Onairpic
my ppt describes mainly the excretory system in annelids.......
Phylum annelida- excretion in annelida
Phylum annelida- excretion in annelida
Priyanka Mangotra
HORMONES AND BEHAVIOUR
HORMONES AND BEHAVIOUR
HORMONES AND BEHAVIOUR
Sruthy Chandran
The primitive blueprint for the heart and circulatory system emerged with the arrival of the third mesodermal germ layer in bilaterians. Since then, hearts in animals have evolved from a single layered tube to a multiple chambered heart in due course of time.
Evolution of Heart
Evolution of Heart
Dr. Pranabjyoti Das
Introduction Ostracoderms (shell-skinned) are of several groups of extinct, primitive, jawless fishes that were covered in an armour of bony plates. They appeared in the Cambrian, about 510 million years ago, and became extinct towards the end of the Devonian, about 377 million years ago. They were quite abundant during the upper Silurian and Devonian periods. Most of fossils of Ostracodermi were preserved in the bottom sediments of freshwater streams. However, the opinion is sharply divided as to whether their habitat was freshwater or marine. The first fossil fishes that were discovered were ostracoderms. The Swiss anatomist Louis Agassiz received some fossils of bony armored fish from Scotland in the 1830s. The ostracoderms resembled the present day cyclostomes (lampreys and hagfishes) in many respects and together with them constitute a special group of jawless vertebrates, the Agnatha. Characteristics: They use gills exclusively for respiration but not for feeding . Earlier chordates with gills used them for both respiration and feeding. Ostracoderms had separate pharyngeal gill pouches along the side of the head, which were permanently open with no protective operculum. mostly small to medium-sized fishes, protected by a heavy, bony dermal (derived from skin) armor. bottom-dwellers; filter-feeders or grazers. no paired fins, but many with stabilizing paired flaps on either side of head. (1) Ostracoderms were the first vertebrates. (2) They were popularly called armoured fishes. (4) They lived in freshwater. (5) They were bottom dwellers. (6) Their body was fish-like and did not exceed 30 cm in size. (7) Paired fins were absent. (8) Median and caudal fins were present. (9) The caudal fin was of heterocercal type. (10) The head and thorax were covered by heavy armour of bones. It protected ostracoderms from the giant scorpion like arthropods, eurypterids. (11) Bony skull was well developed. (12) Mouth was mostly present on the ventral side. (13) They were having large number of gill slits. (14) The nervous system had 10 pairs of cranial nerves. (15) The head had a pair of lateral eyes, and a median pineal eye. (16) They were filter feeders, feeding like a vacuum cleaner. (17) The endoskeleton was either bony or cartilaginous.
Origin and evolution of ostracoderms
Origin and evolution of ostracoderms
Govt.college,Nagda, ujjain.M.P
Explain about development of Urinogenital ducts.
Evolution of Urinogenital Ducts
Evolution of Urinogenital Ducts
D. B. S. College Kanpur
Notes for T.Y.B.Sc. Mumbai University. Course code Semester-VI – USZ0601.
Nervous systems in vertebrates: T.Y.B.Sc. Sem VI Notes
Nervous systems in vertebrates: T.Y.B.Sc. Sem VI Notes
Dr. Sudesh D. Rathod, B N Bandodkar College of Science
comparison of the vertabrates through lineage, and the types of eggs
Comparative Vertebrate Anatomy
Comparative Vertebrate Anatomy
Geonyzl Alviola
Más contenido relacionado
La actualidad más candente
Central nervous system: The central nervous system consists of the brain and spinal cord. The brain plays a central role in the control of most bodily functions, including awareness, movements, sensations, thoughts, speech, and memory. Some reflex movements can occur via spinal cord pathways without the participation of brain structures. The spinal cord is connected to a section of the brain called the brainstem and runs through the spinal canal. Peripheral Nervous System: Nerve fibers that exit the brainstem and spinal cord become part of the peripheral nervous system. Cranial nerves exit the brainstem and function as peripheral nervous system mediators of many functions, including eye movements, facial strength and sensation, hearing, and taste. The autonomic nervous system: The autonomic nervous system is a control system that acts largely unconsciously and regulates bodily functions, such as the heart rate, digestion, respiratory rate, pupillary response, urination, and sexual arousal. This system is the primary mechanism in control of the fight-or-flight response. The autonomic nervous system comprises two antagonistic sets of nerves, the sympathetic and parasympathetic nervous systems. The hypothalamus is the key brain site for central control of the autonomic nervous system, and the paraventricular nucleus is the key hypothalamic site for this control. Divisions of Nervous System: The vertebrate nervous system has three divisions: (i) A central nervous system comprising the brain and spinal cord. Its function is to receive the stimulus from the receptors and transmit its response to the effectors. Thus, it coordinates all the functions of the body. (ii) A peripheral nervous system consisting of cranial and spinal nerves arising from the brain and spinal cord respectively. It forms a connecting link between the receptors, central nervous system (CNS) and effectors. (iii) An autonomic nervous system made of two ganglionated sympathetic nerves, ganglia in the head and viscera, and their connecting nerves. The autonomic nervous system is often regarded as a part of the peripheral nervous system because the two are connected. But all the three divisions of the nervous system are connected intimately both structurally and functionally.
Peripheral and autonomic nervous system of vertebrates
Peripheral and autonomic nervous system of vertebrates
Govt.college,Nagda, ujjain.M.P
Webinar about Digestive system of various vertebrates and its functions.
Comparative Anatomy of Digestive System of Vertebrates
Comparative Anatomy of Digestive System of Vertebrates
RameshPandi4
ORIGIN OF CHORDATES Animal kingdom is basically divided into two sub kingdoms: Non-chordata- including animals without notochord. Chordata- This comprising animals having notochord or chorda dorsalis. Chordates were evolved sometime 500 million years ago during Cambrian period (invertebrates were also began to evolve in this period) . Chamberlain (1900) pointed out that all modern chordates possess glomerular kidneys that are designed to remove excess water from body. It is believed that Chordates have originated from invertebrates. It is difficult to determine from which invertebrate group the chordates were developed. Chordate ancestors were soft bodied animals. Hence they were not preserved as Fossils. However, early fossils of chordates have all been recovered from marine sediments and even modern protochordates are all marine forms. Also glomerular kidneys are also found in some marine forms such as myxinoids and sharks. That makes the marine origin of chordates more believable. Chordates evolved from some deuterostome ancestor (echinoderms, hemichordates, pogonophorans etc.) as they have similarities in embryonic development, type of coelom and larval stages. Many theories infers origin of chordates, hemichordates and echinoderms from a common ancestor.
Origin of chordata
Origin of chordata
Govt.college,Nagda, ujjain.M.P
INTERNATIONAL CODE FOR ZOOLOGICAL NOMENCLATURE TAXONOMIC TOOLS & NAMING SYSTEMATICS
ICZN.pptx
ICZN.pptx
GOPIKAVNAIR3
+FOLLOW COMMENTS
System digestive in reptiles
System digestive in reptiles
Shahida Aziz
Electric organs in fishes 1
Electric organs in fishes 1
Electric organs in fishes 1
Taniya07
1.Definition and basic concepts of Biosystematics, , Historical perspectives of Biosystematics and Taxonomy, Stages of taxonomic procedures-alpha taxonomy, Beta taxonomy and Gamma taxonomy, Neo taxonomy.
Biosystematics, and types of taxonomy
Biosystematics, and types of taxonomy
Datta Nalle
INTRODUCTION The term urogenital refers to something that has both urinary and genital origins. The word urogenital is used because the urinary and reproductive systems in males merge. These are grouped together because of their proximity to each other, their common embryological origin and the use of common pathways (ex. urethra). Kidneys and urinary ducts form the urinary system. The Urinary system performs two important homeostatic processes like excretion and osmoregulation. This system is intimately associated both anatomically, and in terms of embryonic origin with the genital system. The genital system includes the gonads which generate gametes and the genital ducts that serve as passages for the gametes. Though functionally different the two organ systems the urinary and the genital system are treated together as the urino- genital system, since both develop from the same segmental blocks of trunk mesoderm or adjacent tissues and share many of the ducts. Thus although the two systems have nothing common functionally they are closely associated in their use of common ducts and are studied under the broad heading of urinogenital system. The function of the excretory system is crucial in considering the possible environment of the ‘vertebrate life ’. Several main functions can be attributed to all vertebrate excretory systems: Excretion of nitrogenous waste products. Maintaining homeostasis with regard to ions (i.e. salt balance). Regaining valuable substances (glucose, salts, amino acids, etc.) Maintaining a physiological osmotic value (i.e. water balance). The excretory system is formed by a series of paired, segmental nephrons that begin with a nephrostome opening into the coelomic cavity. A pair of glomeruli per segment, supplied by branches from the aorta, projects into the coelomic cavity close to these nephrostomes. At a later stage of development, the glomerulus/nephrostome area becomes separated from the rest of the coelomic cavity by an epithelial fold. The nephrons connect to a duct that is formed by caudal growth of the most anterior nephric tubules. These paired urinary ducts open near the anal region.
Urino genitial system of vertebrates
Urino genitial system of vertebrates
Govt.college,Nagda, ujjain.M.P
This slide describes about the comparative structure of heart among vertebrates.
Comparative anatomy of heart structure
Comparative anatomy of heart structure
GunashreeKarunakhara
Brain of vertebrates
Brain of vertebrates
Brain of vertebrates
St. Xavier's college, maitighar,Kathmandu
Comparative Anatomy - Digestive System
Comparative Anatomy - Digestive System
Emsi Onairpic
Lecture 4 nervous system & behaviour
Lecture 4 nervous system & behaviour
Zeyra Zaha
this will help to understand nervous system of cuttlefish
nervous system of mollusk cephalopod (cuttlefish)
nervous system of mollusk cephalopod (cuttlefish)
NikitaSharma334
Sense organs are the specialized organs composed of sensory neurons, which help us to perceive and respond to our surroundings. There are five sense organs – eyes, ears, nose, tongue, and skin. External receptors (exteroceptors): sense organs for touch, smell, taste, sight and hearing. Internal receptors (interocepyors): these sense organs found in the body which detect the temperature, pain, hunger, thirst, fatigue and muscle position.
Receptor organs in vertebrates
Receptor organs in vertebrates
sunandakumre
Comparative Anatomy - Nervous System
Comparative Anatomy - Nervous System
Emsi Onairpic
my ppt describes mainly the excretory system in annelids.......
Phylum annelida- excretion in annelida
Phylum annelida- excretion in annelida
Priyanka Mangotra
HORMONES AND BEHAVIOUR
HORMONES AND BEHAVIOUR
HORMONES AND BEHAVIOUR
Sruthy Chandran
The primitive blueprint for the heart and circulatory system emerged with the arrival of the third mesodermal germ layer in bilaterians. Since then, hearts in animals have evolved from a single layered tube to a multiple chambered heart in due course of time.
Evolution of Heart
Evolution of Heart
Dr. Pranabjyoti Das
Introduction Ostracoderms (shell-skinned) are of several groups of extinct, primitive, jawless fishes that were covered in an armour of bony plates. They appeared in the Cambrian, about 510 million years ago, and became extinct towards the end of the Devonian, about 377 million years ago. They were quite abundant during the upper Silurian and Devonian periods. Most of fossils of Ostracodermi were preserved in the bottom sediments of freshwater streams. However, the opinion is sharply divided as to whether their habitat was freshwater or marine. The first fossil fishes that were discovered were ostracoderms. The Swiss anatomist Louis Agassiz received some fossils of bony armored fish from Scotland in the 1830s. The ostracoderms resembled the present day cyclostomes (lampreys and hagfishes) in many respects and together with them constitute a special group of jawless vertebrates, the Agnatha. Characteristics: They use gills exclusively for respiration but not for feeding . Earlier chordates with gills used them for both respiration and feeding. Ostracoderms had separate pharyngeal gill pouches along the side of the head, which were permanently open with no protective operculum. mostly small to medium-sized fishes, protected by a heavy, bony dermal (derived from skin) armor. bottom-dwellers; filter-feeders or grazers. no paired fins, but many with stabilizing paired flaps on either side of head. (1) Ostracoderms were the first vertebrates. (2) They were popularly called armoured fishes. (4) They lived in freshwater. (5) They were bottom dwellers. (6) Their body was fish-like and did not exceed 30 cm in size. (7) Paired fins were absent. (8) Median and caudal fins were present. (9) The caudal fin was of heterocercal type. (10) The head and thorax were covered by heavy armour of bones. It protected ostracoderms from the giant scorpion like arthropods, eurypterids. (11) Bony skull was well developed. (12) Mouth was mostly present on the ventral side. (13) They were having large number of gill slits. (14) The nervous system had 10 pairs of cranial nerves. (15) The head had a pair of lateral eyes, and a median pineal eye. (16) They were filter feeders, feeding like a vacuum cleaner. (17) The endoskeleton was either bony or cartilaginous.
Origin and evolution of ostracoderms
Origin and evolution of ostracoderms
Govt.college,Nagda, ujjain.M.P
Explain about development of Urinogenital ducts.
Evolution of Urinogenital Ducts
Evolution of Urinogenital Ducts
D. B. S. College Kanpur
La actualidad más candente
(20)
Peripheral and autonomic nervous system of vertebrates
Peripheral and autonomic nervous system of vertebrates
Comparative Anatomy of Digestive System of Vertebrates
Comparative Anatomy of Digestive System of Vertebrates
Origin of chordata
Origin of chordata
ICZN.pptx
ICZN.pptx
System digestive in reptiles
System digestive in reptiles
Electric organs in fishes 1
Electric organs in fishes 1
Biosystematics, and types of taxonomy
Biosystematics, and types of taxonomy
Urino genitial system of vertebrates
Urino genitial system of vertebrates
Comparative anatomy of heart structure
Comparative anatomy of heart structure
Brain of vertebrates
Brain of vertebrates
Comparative Anatomy - Digestive System
Comparative Anatomy - Digestive System
Lecture 4 nervous system & behaviour
Lecture 4 nervous system & behaviour
nervous system of mollusk cephalopod (cuttlefish)
nervous system of mollusk cephalopod (cuttlefish)
Receptor organs in vertebrates
Receptor organs in vertebrates
Comparative Anatomy - Nervous System
Comparative Anatomy - Nervous System
Phylum annelida- excretion in annelida
Phylum annelida- excretion in annelida
HORMONES AND BEHAVIOUR
HORMONES AND BEHAVIOUR
Evolution of Heart
Evolution of Heart
Origin and evolution of ostracoderms
Origin and evolution of ostracoderms
Evolution of Urinogenital Ducts
Evolution of Urinogenital Ducts
Destacado
Notes for T.Y.B.Sc. Mumbai University. Course code Semester-VI – USZ0601.
Nervous systems in vertebrates: T.Y.B.Sc. Sem VI Notes
Nervous systems in vertebrates: T.Y.B.Sc. Sem VI Notes
Dr. Sudesh D. Rathod, B N Bandodkar College of Science
comparison of the vertabrates through lineage, and the types of eggs
Comparative Vertebrate Anatomy
Comparative Vertebrate Anatomy
Geonyzl Alviola
Lecture about the Nervvous System
The Nervous System (Slide Show)
The Nervous System (Slide Show)
William Banaag
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Nervous system and sense organs
DinDin Horneja
Evolutionary Biology
Invertebrate evolution
Invertebrate evolution
Merlyn Denesia
The nervous system
The nervous system
Smiley Rathy
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The Nervous System Parts And Functions
The Nervous System Parts And Functions
Logos Academy
Nervous System
Nervous System
itutor
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Invertebrates
tracyconover
Comparative anatomy notes for the TYBSc course Semester-VI – USZ0601of University of Mumbai
Urogenital system in vertebrates: TYBSc course Semester-VI – USZ0601of Univer...
Urogenital system in vertebrates: TYBSc course Semester-VI – USZ0601of Univer...
Dr. Sudesh D. Rathod, B N Bandodkar College of Science
Urogenital system chap
Urogenital system chap
Charm Hernandez
This slideshow is designed for students in Mr. Hildebrandt's Anatomy & Physiology classes.
Nervous system notes
Nervous system notes
Shakopee Public Schools
Test Slide
Test Slide
eahsmith
The nervous system
The nervous system
DinDin Horneja
Presentation about Urogenital System (Urinary System and Reproductive System)
The Urogenital System
The Urogenital System
Home
This talk was given as a guest lecture in the undergraduate "Comparative Animal Physiology" course at the University of Texas at Austin. The talk has three parts: 1) a very brief personal introduciton about me and my thesis research, 2) an overview of some brain regions and genes that regulate social behaviors in birds, frogs, fish, reptiles, and mammals, 3) a discussion of a study looking at neuromolecular differences between closely related with with different mating systems.
Evolution of Social Brains
Evolution of Social Brains
Rayna Harris
Endocrine and reproduction
Endocrine and reproduction
tracyconover
Comparative Anatomy - Excretory System
Comparative Anatomy - Excretory System
Emsi Onairpic
Sensory receptors
Sensory receptors
DinDin Horneja
Amphibians
Amphibians
Amphibians
Ivana Damnjanović
Destacado
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Nervous systems in vertebrates: T.Y.B.Sc. Sem VI Notes
Nervous systems in vertebrates: T.Y.B.Sc. Sem VI Notes
Comparative Vertebrate Anatomy
Comparative Vertebrate Anatomy
The Nervous System (Slide Show)
The Nervous System (Slide Show)
Nervous system and sense organs
Nervous system and sense organs
Invertebrate evolution
Invertebrate evolution
The nervous system
The nervous system
The Nervous System Parts And Functions
The Nervous System Parts And Functions
Nervous System
Nervous System
Invertebrates
Invertebrates
Urogenital system in vertebrates: TYBSc course Semester-VI – USZ0601of Univer...
Urogenital system in vertebrates: TYBSc course Semester-VI – USZ0601of Univer...
Urogenital system chap
Urogenital system chap
Nervous system notes
Nervous system notes
Test Slide
Test Slide
The nervous system
The nervous system
The Urogenital System
The Urogenital System
Evolution of Social Brains
Evolution of Social Brains
Endocrine and reproduction
Endocrine and reproduction
Comparative Anatomy - Excretory System
Comparative Anatomy - Excretory System
Sensory receptors
Sensory receptors
Amphibians
Amphibians
Similar a Evolution Of The Nervous System
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Brain
Akhilesh Maurya
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Book article the nervous systems invertebrates vs vertebrates extended versio...
Book article the nervous systems invertebrates vs vertebrates extended versio...
M. Luisetto Pharm.D.Spec. Pharmacology
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Ajbsr.ms.id.000960 (1)
Ajbsr.ms.id.000960 (1)
M. Luisetto Pharm.D.Spec. Pharmacology
.
Bjstr.ms.id.003672 2 (1)
Bjstr.ms.id.003672 2 (1)
M. Luisetto Pharm.D.Spec. Pharmacology
Slides that go with the first in a series of four talks by Mahasraddha on Buddhism, science, philosphy, and consciousness. Given at the Manchester Buddhist Centre on 26th March 2007.
Consciousness Week 1
Consciousness Week 1
manchesterbuddhistcentre
IT WILL BE VERY USEFULL
CONTROL AND CO-DINATION
CONTROL AND CO-DINATION
Dheeraj Daga
Animal behaviour
Neural_control_of_animal_behaviour[1]789.pptx
Neural_control_of_animal_behaviour[1]789.pptx
AyushiRajniGupta
comparative study of sense organs in fish, amphibian, reptile, aves, mammal.
Sensory Organs comparative study in vertebrates.
Sensory Organs comparative study in vertebrates.
suyashempire
The nervous system
The nervous system
Mariam Ohanyan
Answers to Ma'am Dawn's GQs
4 q periodic exam reviewer (answers to d. t. crisologo's guide questions)
4 q periodic exam reviewer (answers to d. t. crisologo's guide questions)
Ferdinand, Jr. Sta. Ana
Learning in Brain
How to brain learn
How to brain learn
muberraoz
Segmented nervous system in annelids.pptx
Segmented nervous system in annelids.pptx
Segmented nervous system in annelids.pptx
DharikAnwar1
This is the first lecture in the Brain, Mind and Education unit on the MSc in Neuroscience and Education at the University of Bristol
Neurons and neuroanatomy v1.11
Neurons and neuroanatomy v1.11
edpahj
Report in biology (nervous system)
Report in biology (nervous system)
Mary Tuazon
Hi
comparative_Nervous_Syst_Vertebrate_Life_Sciences_1yr_PDF.pdf
comparative_Nervous_Syst_Vertebrate_Life_Sciences_1yr_PDF.pdf
Mohitgupta555351
Paper Writing Service - HelpWriting.net 👈
Anatomy And Physiology Essay
Anatomy And Physiology Essay
Paper Writing Service Reviews Castleton
good for biology students
vertebrate and invertebrate nervous system physiology.pptx
vertebrate and invertebrate nervous system physiology.pptx
AdomatiOresto
Neuro Anatomy Introduction, Nervous System, Classification of Nervous System, Cellular Architecture, Neuron Structure, Classification of Neuron, Skull: Osteology, Bones of skull, Skull Joints, Anatomical Position of Skull, Methods of Study of skull.
Nervous sytem and its divisions: Neuro Anatomy
Nervous sytem and its divisions: Neuro Anatomy
Priyanka Pundir
Period 2 Chapter 48
Comparison+Of+The+ Nervous+ System
Comparison+Of+The+ Nervous+ System
AlbanyHighSchool
Comparison+Of+The+Nervous+System
Comparison+Of+The+Nervous+System
ahsapbiology
Similar a Evolution Of The Nervous System
(20)
Brain
Brain
Book article the nervous systems invertebrates vs vertebrates extended versio...
Book article the nervous systems invertebrates vs vertebrates extended versio...
Ajbsr.ms.id.000960 (1)
Ajbsr.ms.id.000960 (1)
Bjstr.ms.id.003672 2 (1)
Bjstr.ms.id.003672 2 (1)
Consciousness Week 1
Consciousness Week 1
CONTROL AND CO-DINATION
CONTROL AND CO-DINATION
Neural_control_of_animal_behaviour[1]789.pptx
Neural_control_of_animal_behaviour[1]789.pptx
Sensory Organs comparative study in vertebrates.
Sensory Organs comparative study in vertebrates.
The nervous system
The nervous system
4 q periodic exam reviewer (answers to d. t. crisologo's guide questions)
4 q periodic exam reviewer (answers to d. t. crisologo's guide questions)
How to brain learn
How to brain learn
Segmented nervous system in annelids.pptx
Segmented nervous system in annelids.pptx
Neurons and neuroanatomy v1.11
Neurons and neuroanatomy v1.11
Report in biology (nervous system)
Report in biology (nervous system)
comparative_Nervous_Syst_Vertebrate_Life_Sciences_1yr_PDF.pdf
comparative_Nervous_Syst_Vertebrate_Life_Sciences_1yr_PDF.pdf
Anatomy And Physiology Essay
Anatomy And Physiology Essay
vertebrate and invertebrate nervous system physiology.pptx
vertebrate and invertebrate nervous system physiology.pptx
Nervous sytem and its divisions: Neuro Anatomy
Nervous sytem and its divisions: Neuro Anatomy
Comparison+Of+The+ Nervous+ System
Comparison+Of+The+ Nervous+ System
Comparison+Of+The+Nervous+System
Comparison+Of+The+Nervous+System
Más de vacagodx
Taken from this site for use by those without ppt application. http://www2.le.ac.uk/departments/engineering/research/bioengineering/neuroengineering-lab/spike-sorting
Spike sorting-tutorial
Spike sorting-tutorial
vacagodx
Emotions 2
Emotions 2
vacagodx
Emotion
Emotion
vacagodx
Language
Language
vacagodx
Chemical Senses
Chemical Senses
vacagodx
Vestibular System
Vestibular System
vacagodx
Auditory System
Auditory System
vacagodx
Chemical Senses
Chemical Senses
vacagodx
Memory Games
Memory Games
vacagodx
Cognition
Cognition
vacagodx
Memory2
Memory2
vacagodx
Memory
Memory
vacagodx
Pain presentation
Pain presentation
vacagodx
Movement I
Movement I
vacagodx
Movement II
Movement II
vacagodx
Animal Senses
Animal Senses
vacagodx
Yeah, i'm too lazy to open up adobe... enjoy! (I hear NSHS has a record number of students attending this year!) [which means that ass kicking is mandatory]
Brain Bee Facts
Brain Bee Facts
vacagodx
Vision Lucky
Vision Lucky
vacagodx
The Teenage Brain
The Teenage Brain
vacagodx
Development
Development
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Spike sorting-tutorial
Spike sorting-tutorial
Emotions 2
Emotions 2
Emotion
Emotion
Language
Language
Chemical Senses
Chemical Senses
Vestibular System
Vestibular System
Auditory System
Auditory System
Chemical Senses
Chemical Senses
Memory Games
Memory Games
Cognition
Cognition
Memory2
Memory2
Memory
Memory
Pain presentation
Pain presentation
Movement I
Movement I
Movement II
Movement II
Animal Senses
Animal Senses
Brain Bee Facts
Brain Bee Facts
Vision Lucky
Vision Lucky
The Teenage Brain
The Teenage Brain
Development
Development
Último
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Evolution Of The Nervous System
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Convolutions in Mammals
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