Prosimian		powerful muscle that pulls the bottom of the chest cavity downward
rumen		the gland that mammals are named after
mammalia		mammals eat ___ times as much food as a reptile of the same size
homosapien		mom and young exchange materials through the placenta
marsupial		thumb that enables humans and primates to grasp three- dimensional objects
primates		the ability of mammals to regulate their body heat from within
prehensile		lay eggs
placental		first mammals showed up in this time period
ten		center of thinking
Binocular		members of the more familiar primate group
homeostasis		a tail that can act as a fifth hand
monotreme		have binocular vision
opposable		animal who carries young in a pouch
Triassic		vision that has the ability to merge visual objects
diaphragm		help maintain homeostasis
bipedal		two- foot locomotion
mammary		cow's four-chambered stomach
hominoids		all mammals belong to this group
kidney		primates that look little like typical monkeys
cerebal cortex		include gibbons, gorillas, orangutans,
anthropoids		what a human is classified to be