1. TEKS 7.12C recognize levels of organization in plants and animals, including cells, tissues, organs, organ systems, and organism
TEKS 7.12B identify the main functions of the systems of the human organism including the circulatory, respiratory, skeletal, muscular, digestive,
excretory, reproductive, integumentary, nervous and endocrine systems
TEKS 7.12E compare the functions of a cell to the functions of organisms such as waste removal
Organization & Body Systems Vocabulary
Term
Definition
cell
Membrane-covered structures that make up organisms
and contain all the materials necessary for life... basic
unit of structure and function of all living organisms.
community
All of the different types of organisms (or populations)
that interact in the same place at the same time.
circulatory
system
Carries needed materials like food & oxygen to body
cells; carries wastes away from body cells; helps fight
disease & infections.
Example
digestive
system
Takes in food, breaks it down & absorbs needed
nutrients.
heart & blood vessels
mouth, esophagus, stomach,
intestines, liver/ gall bladder,
& pancreas
ecosystem
All of the living and nonliving things that interact in an
area at a time.
endocrine
system
Controls & regulates many body processes like growth,
development & metabolism with hormones.
pancreas & glands
(pituitary, pineal, thyroid,
adrenal, thymus)
excretory
system
Removes waste products like urine, feces, carbon
dioxide, sweat, bile & worn out cells from the body.
kidneys, bladder, large
intestine, lungs, skin, liver &
spleen
homeostasis
integumentary
system
muscular
system
nervous
system
organ
organism
The process by which an organism maintains a stable
internal environment despite external changes.
Protects the body from infection, injury & UV rays;
keeps water inside & helps regulate body temperature.
skin, sweat glands, oil
glands, hair & nails
Enables body to move; allows heart to pump to circulate
blood & moves food through the digestive system.
muscles (skeletal, smooth
& cardiac) & tendons
Controls senses & most body functions by carrying
information between the brain & body.
brain, spinal cord & body
nerves
Different tissues working together to perform a specific
function.
heart, lungs, kidneys,
brain, intestines, bladder,
leaf, flower, fruit, etc…
Anything living; all of the organ systems working
together.
Plant, animal, fungi,
bacteria, etc…
root, shoot, circulatory, skeletal,
muscular, respiratory, nervous,
reproductive…
organ system
Different organs working together to perform a major
function in the body.
population
A group of the same type of organisms that interact in
the same place at the same time.
reproductive
system
Produces sex cells & hormones that control male &
female characteristics; produces offspring to continue
the species.
testes, ovaries & uterus
Takes oxygen into the body and removes carbon
dioxide.
nose, trachea, bronchi,
lungs & alveoli
respiratory
system
skeletal
system
tissue
Supports & shapes body, protects major organs, works
with muscles to allow movement & makes blood cells
bones, joints cartilage,
ligaments & bone marrow
A group of similar cells working together to perform a
specific function.
skin, bone, muscle, blood,
fat, nervous, etc…