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Ch. 12 Vocabulary

Bird an endothermic vertebrate that has feathers and a four-chambered heart.
Contour feather one of the large feathers that give shape to a bird's body
Down feather are specialized to trap heat and keep the bird warm.
Crop an internal storage tank for storing food inside the body after swallowing it.
Gizzard a thick walled, muscular part of the stomach.
Lift an upward force that causes the bird to rise.
Mammal endothermic vertebrates that have a four-chambered heart and skin covered with fur or hair.
Mammary Gland organs that produce milk on a mothers body.
Diaphragm combined action of rib muscles and a large muscle.
Monotreme egg-laying mammals
Marsupial mammals whose young are born at an early stage of development
Gestation Period
Placental mammal develops inside its mother's body until its body systems can function independently
Created by: s730496