Nervous system

The Nervous System ,[object Object],[object Object],[object Object],Central Nervous System Peripheral Nervous System

Peripheral Nervous System ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Spinal Cord Brain Nerves

Peripheral Nervous System S k e l e t a l ( S o m a t i c ) S y m p a t h e t i c P a r a s y m p a t h e t i c A u t o n o m i c P e r i p h e r a l N e r v o u s S y s t e m

Somatic System ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Muscle Motor Neuron Interneuron Skin receptors Sensory Neuron Brain

Autonomic System ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Sympathetic ,[object Object],[object Object],[object Object],[object Object],[object Object],CENTRAL NERVOUS SYSTEM Brain Spinal cord SYMPATHETIC Dilates pupil Stimulates salivation Relaxes bronchi Accelerates heartbeat Inhibits activity Stimulates glucose Secretion of adrenaline, nonadrenaline Relaxes bladder Stimulates ejaculation in male Sympathetic ganglia Salivary glands Lungs Heart Stomach Pancreas Liver Adrenal gland Kidney

Parasympathetic ,[object Object],[object Object],[object Object],CENTRAL NERVOUS SYSTEM Brain PARASYMPATHETIC Spinal cord Stimulates salivation Constricts bronchi Slows heartbeat Stimulates activity Contracts bladder Stimulates erection of sex organs Stimulates gallbladder Gallbladder Contracts pupil

Summary of autonomic differences Autonomic nervous system controls physiological arousal Sympathetic division (arousing) Parasympathetic division (calming) Pupils dilate EYES Pupils contract Decreases SALVATION Increases Perspires SKIN Dries Increases RESPERATION Decreases Accelerates HEART Slows Inhibits DIGESTION Activates Secrete stress hormones ADRENAL GLANDS Decrease secretion of stress hormones

Central Nervous System ,[object Object],Spinal Cord Brain

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Brain has 2 Hemispheres Left Hemisphere Corpus Callosum Right Hemisphere

Each hemisphere is divided into 4 lobes Frontal Parietal Occipital Temporal

Sensory Information sent to opposite hemisphere ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Left visual field Right visual field Optic nerves Corpus Callosum Left Visual Cortex Right Visual Cortex

Contralateral Motor Control ,[object Object],[object Object],[object Object],[object Object],Somatosensory Cortex Motor Cortex

Corpus Callosum ,[object Object],[object Object],[object Object],[object Object],Corpus Callosum Medial surface of right hemisphere

Corpus Callosum ,[object Object],[object Object],[object Object],[object Object]

The ‘Split Brain’ studies ,[object Object],[object Object],[object Object],[object Object],[object Object],Nonverbal right hemisphere Verbal left hemisphere

[object Object],[object Object],[object Object],The ‘Split Brain’ studies ,[object Object],[object Object],[object Object],Nonverbal right hemisphere Verbal left hemisphere ?? “ What did you see?” “ Using your left hand, Pick up what you saw.” I saw an apple. “ What did you see?” Nonverbal right hemisphere Verbal left hemisphere

Localization of function Frontal Parietal Occipital Temporal

Occipital Lobe ,[object Object],[object Object],[object Object],[object Object],Occipital Lobe Visual Lobe

Temporal Lobe ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Temporal Lobe Temporal Lobe Auditory Cortex

Parietal Lobe ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Parietal Lobe Somatosensory Cortex

Frontal Lobe ,[object Object],[object Object],[object Object],[object Object],[object Object],Frontal Lobe Motor Cortex Motor Cortex Broca’s Area Motor Cortex Working Memory

Frontal Lobe Disorders ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Wisconsin Card Sorting Task ,[object Object],[object Object],[object Object],[object Object],[object Object],Correct!

The Nervous System: Summary ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Central Nervous System Peripheral Nervous System

Nervous system

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Nervous system