Term
| British anatomist who identified 3 prominent tendencies about Primates. What are those tendencies? |
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Definition
Sir Wilfrid E. Le Gros Clark
1. primates adapted and express arboreal adaptation that is unique among mammals
2. primates express dietary plasticity
3. primates invest a lot of time and care in few offspring, parental investment |
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Term
| What physical characteristics do Primates have that are well suited for arboreal adaptation? |
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Definition
- generalized skeletal system
- enhanced sense of touch
- enhaced vision and increase depth perception/color
- dietary plasticity |
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Term
| Describe a Primate's generalized skeletal system |
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Definition
- allows for wide range of motion/ highly specialized joints
- opposible thumbs
- power grip and preicion grip
- distinctive body trunk
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Term
| What is the purpose of a primate's enhanced touch |
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Definition
| the dermal ridges enhance their tactile sense, create friction, reduce slipping |
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Term
| why do primates have enhanced vision/ depth perception? |
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Definition
they have an overlapped field of vision which allows them to have increased depth perception
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Term
| why the reduced sense of smell? |
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Definition
| snout length is reduced which led to reduced reliance on smell |
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Term
| How do a primates dental characteristics reflect dietary plasticity? |
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Definition
| They have 4 functional tooth types: incisors, canines, premolars, and molars |
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Term
| What is a dental formula? |
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Definition
numerical description of a species' teeth of each jaw quadrants ( incisors, canines, premolars, and molars)
can be used to identify ancestors |
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Term
| how have primates evolved different dental specializations? |
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Definition
| tooth comb, sectorials, canine premolar honing complex.. |
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Term
| Why does parental investment benefit primates? |
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Definition
| while it leads to fewer offspring, more time is spent teaching offspring, more socially developed, increased intelligence in comparison to other animals, longer lifespan |
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Term
| What are the two kinds of primates? |
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Definition
| Strepsirhini and Haplorhini |
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Term
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Definition
| retain primitive characteristics ( rhinarium, heightened sense of smell, dietary plasticity and behavior) nocturnal, less developed brain, more specialized teeth |
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Term
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Definition
| have lost a number of primitive characteristics, larger brains, more dimorphic sexually, diurnal, generalized/reduced number of teeth |
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Term
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Definition
| foramens magnum located toward back of skull, longer pelvis and directed toward back of body |
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Term
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Definition
| foramens magnum located toward middle of skull, shorter pelvis, |
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