Fish Flashcards
main skeletal element of a fish; composed of vertebrae
vertebral column
embryonic cell type unique to vertebrates
neural crest
helps fish move in water
fin
covering on fish
scales
facial support and gill covering
operculum
upper chamber in which blood enters the heart; fish have one while humans have two
atrium
the atrium pumps the blood into the _____, a thin-walled muscular chamber
ventricle
functional unit of the kidney
nephron
visible line along the side of a fish made up of sense organs
lateral line
method of fish reproduction in which a female releases unfertilized eggs in the water and males release sperm
spawning
gas-filled sac used to maintain buoyancy
swim bladder
includes lampreys, hagfishes, and several extinct groups
jawless fish
fish that have a skeleton made of cartilage rather than bone; includes sharks and rays
cartilaginous fish
diverse group of fish that have skeletons composed of bone
bony fish
greenish-brownish fish with a long dorsal fin and a spot by the tail
bowfin/dogfish