Reptiles

Created by ZB15 

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dinosaur

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

amniotic egg

encase the embryo in a secure self-contained aquatic environment

amnion

thin membrane enclosing the fluid in which the embryo floats

yolk sac

encloses the yolk, a fat-rich food supply for the developing embryo

allantois

stores the nitrogenous wastes produced by the embryo

alumben

protein & water needed by the embryo are contained in this

chorion

surrounds all the other membranes & help protect the developing embryo

keratin

scales/shell made from the same protein that forms your nails & hair

septum

in reptiles the heart has 2 atria & 1 ventricle partially divided by a wall of tissue

alveolus

lining of the lungs may be folded into numerous small sacs

jacobson's organ

specialized sense organ located in the roof of the mouth

ectotherm

warms its body by absorbing heat from its surroundings

endotherm

mammals & birds, rapid metabolism which generates heat needed to warm the body

oviparity

female's reproductive tract that encloses each egg in a tough protective shell

ovoviviparity

retain eggs in body for a long pd of time

viviparity

shell doesn't form around egg, the young are retained within the female's body til they're mature enough to be born

placenta

nutrients & oxygen are transferred from mom to embryo

carapace

top or dorsal part of the turtle shell

plastron

bottom or ventral part of the turtle shell

autotomy

the ability to detatch the tail

constrictor

snakes wrap their body around their prey

elapid

inject poison thru 2 small fixed fangs in the front of the mouth

viper

inject venom thru large, mobile fangs in the front of the mouth

299 MYA

mass extinction

Chelonia

turtles, tortoises

Crocodillia

alligators, crocodiles

Squamata

lizards, snakes

Rhynchocephalia

tuataras

pulmonary loop

carries deoxygenated blood from the heart to the lungs & returns oxygenated blood to the heart

systematic loop

transports oxygenated blood to the tissues & returns deoxygenated blood to the heart

thermoregulation

control of body temperature

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