Bipedalism and the evolution of extended childhood

Bipedalism and the evolution of extended childhood -...

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Bipedalism and the evolution of extended childhood 21:32 I. Control of fire***greatest cultural mark of evolution II. Biological mark= Bipedalism***greatest biological mark of evolution a. Changes shape of spinal column b. S shaped spinal column- Changed by bipedalist change c. Wider pelvis- femur is below pelvis  d. Negative effects- back pain d.i. Not as efficient---speed reduced d.ii. Enlarged the size of pelvis d.ii.1. Allows us to produce big babies d.ii.2. Babies have a greater chances of surviving because bigger  babies. d.iii. By changing shape of pelvis does not change size of birth canal d.iii.1. Actually is SMALL birth canal because babies are bigger d.iii.2. Baby ‘s have smaller brain but are big d.iii.3. Who we are depends on our parental behavior d.iii.4. Central nervous system is not mature d.iii.5. 8 Years is the largest the brain will grow d.iii.6. 27% brain size established at birth
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Bipedalism and the evolution of extended childhood -...

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