| Term | Definition |
|
amphibian |
An ectothermic vertebrate that spends it early life in water and its adulthood on land, returning to water to reproduce |
|
atrium |
Each of the two upper chambers that receives blood that comes into the heart |
|
buoyant force |
The force that water exerts upward on any underwater object |
|
cartilage |
A connective tissue that is more flexible than bone and that gives support to some parts of the body |
|
chordate |
The phylum whose members have a notochord, a nerve cord, and slits in their throat area at some point in their lives |
|
ectotherm |
An animal whose body does not produce much internal heat |
|
endotherm |
An animal whose body controls and regulates its temperature by controlling the internal heat it produces |
|
fish |
An ectothermic vertebrate that lives in the water and has fins |
|
habitat |
The place where an organism lives and that provides the things the organism needs |
|
notochord |
A flexible rod that supports a chordate's back |
|
reptile |
An ectothermic vertebrate with lungs and scaly skin. It lays eggs with tough, leathery shells |
|
swim bladder |
An internal gas-filled organ that helps a bony fish stabilize its body at different water depths |
|
urine |
A watery fluid produced by they kidneys that contains urea and other waste materials |
|
ventricle |
A lower chamber of the heart that pumps blood out to the lungs and body |
|
vertebra |
The bones that make up the backbone of an animal |
| Add or remove terms from this set |