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Jackson-SC-Ch16&17

TermDefinition
vertebrate an animal that has a backbone
endotherm an animal that can use body heat from chemical reactions in the body's cells to maintain a constant body temperature
ectotherm 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 detect vibrations in water
gill a respiratory organ in which oxygen from the water is exchanged with carbon dioxide from the blood
swim bladder in bony fishes, a gas-filled sac that is used to control buoyancy; also known as a gas bladder
lung 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 or toad
amniotic egg 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
preening in birds, the act of grooming and maintaining their feathers
molting the shedding of an exoskeleton, skin, feathers, or hair to be replaced by new parts
down feather a soft feather that covers the body of young birds and provides insulation to adult birds
contour feather one of the most external feathers that cover a bird and that help determine its shape
brooding to sit on and cover eggs to keep them warm until they hatch; to incubate
mammary gland in a female mammal, a gland that secretes milk
diaphragm a dome-shaped muscle that is attached to the lower ribs and that functions as the main muscle in respiration
placental mammal a mammal that nourishes its unborn offspring through a placenta inside its uterus
gestation period in mammals, the length of time between fertilization and birth
monotreme a mammal that lays eggs
marsupial a mammal that carries and nourishes its young in a pouch
Created by: tlindstrom
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