Exam 2 topic 6 A Flashcards
Why do we study nonhuman primates?
- Humans are primates
- Understanding out ancestor
- Biology and behavior
Three types of mammals
Monotremes, Marsupials, placentals
Traits of Mammals
Homeothermy/endothermy (warm blooded) heterodonty (different teeth) growth stops at adulthood mammary glands parental care
Ancestral mammalian traits characterizing primates
four limbs
5 digits
heterodonty
defining traits of primates (shared-derived traits)
grasping hands and feet
nails instead of claws
post orbital bar
General primate patterns
Larger brain
olfaction
vision importance
longer history stages
Homeothermy/endothermy
warm blooded
heterodonty/homodonty
having different teeth
prehensile
capable of grasping
orbital convergence
forward facing eyes
binocular vision
using two eyes with overlapping fields of view
stereoscopic
depth perception
Relative brain size
relative to body size
increased complexity
neocortex (top part of cerebrum)
Olfaction
decreased importance of sense of smell
rhinarium
wet nose