flexible, tough material that makes up vertebrate skeletons or parts of vertebrate skeletons

group of cells that develops from the embryo's ectoderm and contributes to the development of many vertebrate structures

paddle-shaped structure of a fish or other aquatic animal used for steering, balance, and propulsion

small, flat, platelike structures near the surface of the skin and most fishes; can be ctenoid, cycloid, placoid, or ganoid

movable, protective flap that covers a fish's gills and helps to pump water that enters the mouth and moves over the gills

heart chamber that receives blood from the body

the heart chamber that pumps blood from the heart to the gills

sensory receptors that enable fishes to detect vibrations, or sound waves, in water

process by which male and female fishes release their gametes near each other in the water

gas-filled internal space in body fishes that allow them to regulate their buoyancy

four-footed animal with legs that have feet and toes with joints

in amphibians, the chamber that receives digestive waste, urinary waste, and eggs or sperm before they leave the body

in amphibians , the transparent eyelid that moves across the eye to prevent it from drying out on land and to protect it under water

animal that cannot regulate its body temperature though its metabolism and obtains its body heat from the external environment

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bio 2 ch. 28 vocab

Vacabulary

Term	Definition
cartilage	flexible, tough material that makes up vertebrate skeletons or parts of vertebrate skeletons
neural crest	group of cells that develops from the embryo's ectoderm and contributes to the development of many vertebrate structures
fin	paddle-shaped structure of a fish or other aquatic animal used for steering, balance, and propulsion
scale	small, flat, platelike structures near the surface of the skin and most fishes; can be ctenoid, cycloid, placoid, or ganoid
operculum	movable, protective flap that covers a fish's gills and helps to pump water that enters the mouth and moves over the gills
atrium	heart chamber that receives blood from the body
ventricle	the heart chamber that pumps blood from the heart to the gills
nephron	filtering unit of the kidney
lateral line system	sensory receptors that enable fishes to detect vibrations, or sound waves, in water
spawning	process by which male and female fishes release their gametes near each other in the water
swim bladder	gas-filled internal space in body fishes that allow them to regulate their buoyancy
tetrapod	four-footed animal with legs that have feet and toes with joints
cloaca	in amphibians, the chamber that receives digestive waste, urinary waste, and eggs or sperm before they leave the body
nictitating membrane	in amphibians , the transparent eyelid that moves across the eye to prevent it from drying out on land and to protect it under water
tympanic membrane	eardrum
ectotherm	animal that cannot regulate its body temperature though its metabolism and obtains its body heat from the external environment

Created by: Emmelee

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