group of extinct reptiles that dominated life on land roughly 150 million years
asteroid impact hypothesis
suggests a huge asteroid hit Earth & formed a crater on the Yucatan
encase the embryo in a secure self-contained aquatic environment
thin membrane enclosing the fluid in which the embryo floats
encloses the yolk, a fat-rich food supply for the developing embryo
stores the nitrogenous wastes produced by the embryo
protein & water needed by the embryo are contained in this
surrounds all the other membranes & help protect the developing embryo
scales/shell made from the same protein that forms your nails & hair
in reptiles the heart has 2 atria & 1 ventricle partially divided by a wall of tissue
lining of the lungs may be folded into numerous small sacs
specialized sense organ located in the roof of the mouth
warms its body by absorbing heat from its surroundings
mammals & birds, rapid metabolism which generates heat needed to warm the body
female's reproductive tract that encloses each egg in a tough protective shell
retain eggs in body for a long pd of time
shell doesn't form around egg, the young are retained within the female's body til they're mature enough to be born
nutrients & oxygen are transferred from mom to embryo
top or dorsal part of the turtle shell
bottom or ventral part of the turtle shell
the ability to detatch the tail
snakes wrap their body around their prey
inject poison thru 2 small fixed fangs in the front of the mouth
inject venom thru large, mobile fangs in the front of the mouth
carries deoxygenated blood from the heart to the lungs & returns oxygenated blood to the heart
transports oxygenated blood to the tissues & returns deoxygenated blood to the heart
control of body temperature
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