Chapter 16 Fishes, Amphibians, and Reptiles

An animal with a skull and a backbone; includes mammals, birds, reptiles, amphibians and fish Click for Term

Vertebrate An animal with a skull and a backbone; includes mammals, birds, reptiles, amphibians and fish Click for Term

Segments of bone or cartilage that interlock to form a backbone Click for Term

Vertebrae Segments of bone or cartilage that interlock to form a backbone Click for Term

An animal that maintains a constant body temperature despite temperature changes in its environment, warm blooded Click for Term

Endotherm An animal that maintains a constant body temperature despite temperature changes in its environment, warm blooded Click for Term

An animal whose body temperature fluctuates with the temperature of its environment, cold blooded Click for Term

Ectotherm An animal whose body temperature fluctuates with the temperature of its environment, cold blooded Click for Term

Fanlike structures that help fish move, turn, stop and balance Click for Term

Fins Fanlike structures that help fish move, turn, stop and balance Click for Term

Bony structures that cover the skin of bony fishes Click for Term

Scales Bony structures that cover the skin of bony fishes Click for Term

Row of tiny sense organs along the sides of a fish’s body Click for Term

Lateral line system Row of tiny sense organs along the sides of a fish’s body Click for Term

Organs that remove oxygen from the water and carbon dioxide from the blood Click for Term

Gills Organs that remove oxygen from the water and carbon dioxide from the blood Click for Term

Small, sharp toothlike structures on the skin of cartilaginous fishes Click for Term

Denticles Small, sharp toothlike structures on the skin of cartilaginous fishes Click for Term

Balloon-like organ that is filled with oxygen and other gases; gives bony fishes their buoyancy Click for Term

Swim Bladder Balloon-like organ that is filled with oxygen and other gases; gives bony fishes their buoyancy Click for Term

A sac-like organ that takes oxygen from the sir and delivers it to the blood Click for Term

Lung A sac-like organ that takes oxygen from the sir and delivers it to the blood Click for Term

Aquatic larvae of an amphibian Click for Term

Tadpole Aquatic larvae of an amphibian Click for Term

Process in which an insect or other animal changes form as it develops from an embryo or larva to an adult Click for Term

Metamorphosis Process in which an insect or other animal changes form as it develops from an embryo or larva to an adult Click for Term

Prehistoric, reptile ancestor of mammals Click for Term

Therapsid Prehistoric, reptile ancestor of mammals Click for Term

Egg containing amniotic fluid to protect the developing embryo; usually surrounded by a hard shell Click for Term

Amniotic Egg Egg containing amniotic fluid to protect the developing embryo; usually surrounded by a hard shell Click for Term