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Vertebrates Quiz

Fish An ectothermic vertebrate that lives in the water and has fins
cartilage a tissue that is more flexible than bone
swim bladder An internal gas-filled organ that helps a bony fish stabilize its body at different depths
Amphibian an ectothermic vertebrate that spends its early life in water and its adult life on land
tadpole The larval form of a frog or toad
atria an upper chamber of the heart that receives blood
ventricle a lower chamber of the heart that pumps blood out to the lungs and body
Reptile an ectothermic vertebrate that lays eggs and has lungs and scaly skin
Kidneys an organ that filters wastes from the blood
urine a watery fluid produced by the kidneys that contains wastes
amniotic egg an egg with a shell and internal membranes that keep the embryo moist; a major adaptation to life on land. characteristic of reptiles, birds, and egg-laying mammals
Birds an endothermic vertebrate that lays eggs and has feathers and a 4 chambered heart
Contour feather a large feather that helps give shape to a bird's body
down feathers a short, fluffy feather that traps heat and keeps a bird warm
crop an internal organ of many birds that stores food
gizzard a muscular, thick-walled part of a bird's stomach that squeezes and grinds partially digested food
Mammals an endothermic vertebrate with a 4 chambered heart and skin covered with fur or hair, that feeds its young with milk from the mother's body
mammary glands an organ in female mammals that produces milk for the mammal's young
diaphragm a large muscle located at the bottom of a mammal's rib cage that functions in breathing
Monotremes a mammal that lays eggs
marsupials a mammal whose young are born at an early stage of development, and which usually continue to develop in a pouch on their mother's body
gestation period the length of time between fertilization and birth of the mammal
placental mammal a mammal that develops inside a mother's body until its body systems can function independantly
placenta an organ in pregnant placental mammals that passes materials between the mother and the developing embryo.
Created by: sophiehudin