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Flashcards in science yus Deck (9)
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1

vertebrates

an animal of a large group distinguished by the possession of a backbone or spinal column, including mammals, birds, reptiles, amphibians, and fishes.

2

endotherms

an animal that is dependent on or capable of the internal generation of heat; a warm-blooded animal

3

ectotherms

an animal that is dependent on external sources of body heat

4

lateral line

a visible line along the side of a fish consisting of a series of sense organs that detect pressure and vibration

5

gills

the paired respiratory organ of fishes and some amphibians, by which oxygen is extracted from water flowing over surfaces within or attached to the walls of the pharynx

6

jawless fish

lamprey, hagfish

7

cartilaginous fish

shark,stingray,hammerhead

8

bony fish

clownfish,walleye,crappie

9

swim bladder

The swim bladder, gas bladder, fish maw or air bladder is an internal gas-filled organ that contributes to the ability of many bony fish (but not cartilaginous fish) to control their buoyancy, and thus to stay at their current water depth without having to waste energy in swimming