Fish
capillaries
O2 diffuses into the blood through ___________ in the gills . CO2 diffuses out
jawless fish
fish in class agnatha are also known as
swim bladder
helps them to stay afloat at a certain depth. Air-filled organ.
lampreys hagfish
2 examples of jawless fish
fresh salt
Fish can live in _______ water or ______ water
O2 CO2
Fish take _____ from the water and give off _____
receives pumps
In a fish's two-chambered 1 side _________ blood in the heart and the other side _______ blood to the body
mucous
Jawless fish secrete _______ when they are disturbed
sharks skates rays
List 3 examples of cartilaginous fish
largest
class osteichthyes is the __________ group of fish
fish
____ are vertebrate animals with fins, gills, and usually scales.
Gills absorb the O2 gas. O2 dissolves into the blood through capillaries in the gills CO2 diffuses out. Deoxygentated blood becomes oxygenated
briefly describe how the circulatory system works
Water moves into the mouth and across the gill filaments. Gills absorb the O2 gas that has dissolved in the water
briefly describe how the respiratory system works
cold-blooded
ectothermic; body temperature changes with the surroundings. Activity also changes with temperature.
lobe-finned
few known species; muscular/ thick fins/ air sacs or lungs.
two gills closed
fish have a _____ chambered heart, ______ and a _______ system
jaws scales fins worm cartilage round hooked
fish in class agnatha have no _____, no _________, paired _____, are _______-like creatures, have skeletons made of __________, have ________ mouths, and _________ teeth
cartilaginous fish
fish in class chondrichthyes are also known as
cartilage jaws scales fins denticles
fish in class chondrichthyes have endoskeletons made of ___________, ______, _________, and paired _______, and ______________
bony fish
fish in class osteichthyes are also known as
bone jaws scales fins swim swim bladder
fish in class osteichthyes have an endoskeleton made of _______, have ______, _________, paired ______, do not need to _______ constantly, and have a ______ __________ to control buoyancy.
goldfish trout
list 2 examples of fish from class osteichthyes
lungfish coelacanths
list 2 examples of lobe-finned fish
class agnatha class chondrichthyes class osteichthyes
list the three classes of fish
ray-finned lobe-finned
list the two types of bonyfish
ray-finned
more common; paired fins with thin rays of bone
nostrils
not for breathing but for smelling
scales
overlapping plates, used for protection. Grow larger with the fish.
fins
paired ______ control finer movements
lateral line
sensory organ used to detect vibrations and pressure
swim swim bladder
sharks must ______ constantly to stay alive, and have no ______ ________
ocean flapping tail
skates and rays rest and feed on the _______ floor, propel by "__________" paired fins which look like wings, and have a long, narrow _______.
parasites scavengers
some jawless fish are ___________, most are ____________.
denticles
tooth-like structures on skin of cartilaginous fish
