Cold-Blooded Vertebrates Flashcards
(15 cards)
Vertebrates
An animal that has a backbone.
Endothermic
An animal that can use body heat from chemical reactions in the body’s cells to maintain a constant body temperature.
Ectothermic
An organism that needs sources of heat outside of itself.
Lateral Line
A faint line visible on both sides of a fish’s body that runs the length of the body and marks the location of sense organs that detects vibrations in water.
Gills
A respiratory organ in which oxygen from the water is exchanged with carbon dioxide from the blood.
Jawless Fishes
Any of various primitive fish of the class Agnatha that lack jaws.
Cartilaginous Fishes
A fish of a class distinguished by having a skeleton of cartilage rather than bone, including the sharks, rays, and chimeras.
Bony Fishes
A fish of a large class distinguished by a skeleton of bone, and comprising the majority of modern fishes.
Swim Bladder
A gas-filled sac that is used to control buoyancy; also known as a gas bladder.
Amphibians
A cold-blooded vertebrate animal of a class that comprises the frogs, toads, newts, and salamanders. They are distinguished by having an aquatic gill-breathing larval stage followed (typically) by a terrestrial lung-breathing adult stage.
Lungs
A respiratory organ in which oxygen from the air is exchanged with carbon dioxide from the blood.
Tadpole
The aquatic, fish-shaped larva of a frog.
Metamophisis
A phase in the life cycle of many animals during Wich a rapid change from the immature form of an organism to the adult form takes place.
Amniotic Eggs
A type of egg that is surrounded by a membrane, the amnion, and that in reptiles, birds, and egg-laying mammals contains a large amount of yolk and is surrounded by a shell.
Reptiles
A vertebrate animal of a class that includes snakes, lizards, crocodiles, turtles, and tortoises. They are distinguished by having a dry scaly skin and typically laying soft-shelled eggs on land.
