Module 2 Flashcards
(15 cards)
what are the traits of a primate
- forward facing eyes
- nails instead of claws
- large brain for body size
- grasping hands and feet
what are the 6 ways humans and great apes skull differ
- Gait
- brain size
- differences in importance of senses
- mating systems
- communication
- differences in food processing and dietary differences
what is the position of the foremen magnun in humans compared to apes
humans - inferior and central
apes - posterior
Order these species from largest brain capacity to smallest: human , gorilla, orangutan, chimpanzee
- human
- gorilla
- chimpanzee and orangutan
what does encephalisation quotient mean
size of Brian in comparison to body weight
what are the differences in brain shape in humans compared to apes
humans - more round and have a larger frontal, partial and temeprol lobe
apes have a post orbital constriction
why does the senses level of importance matter
eg if sight is the main sense the eye orbits will be bigger
eg if the olfactory system is more important nasal cavity will be bigger
what shaped dental arcade do apes have
U shaped dental arcade
what shaped dental arcade to humans have
parabolic dental arcade
How does an apes diet influence it dentition
harder foods like nuts, high fibre tough food= needs large canines and molars = robust teeth and large surface area
how does humans diet influxes their dentition
food is processed - small canines and teeth
what does apes diets have on their masticatory muscles
more chewing - bigger muscles for more force
what are apes masticatory muscles attachment sites
temporalis muslces attaches at sagittal crest
sagittal crest is robust and sticks up
what is the CP3 horning complex
it involves the P3 , lower and upper canine
the upper canine gets sharpened by the p3 and is used for competitive mating
