14.BIPEDALISMEXTENDEDCHILD

14.BIPEDALISMEXTENDEDCHILD - 11/15/09 BIPEDALISM AND THE...

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11/15/09 1 BIPEDALISM AND THE EVOLUTION OF HUMANES Bipedalism and heat Adaptation 5 0 45 0 90 0 In quadrupedal posture (above) more body surface is exposed to the sun than in bipedal posture (bellow ). Shape of the Pelvis, legs and the vertebral column in a quadrupedal chimpanzee and human Chimpanzee Human
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11/15/09 2 The Pelvis of chimpanzee and human Chimpanzee Human The Pelvis of chimpanzee and human Chimpanzee Human The pelvis in chimpanzee is long and narrow and the pelvic inlet large, while in humans is the pelvis is large and wide but the pelvic inlet is small Pelvic Shape and Child birth: Chimpanzee & Human
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11/15/09 3 Modern humans live slower and die later than our ancestors did . I. Length of childhood has more than doubled in length in modern humans as compared to chimpanzees. •Humans take twice as long as chimpanzees to reach adulthood •Even though humans are only a bit bigger than chimpanzees, we mature and reproduce a decade later and live 2 to 3 decades longer. •Humans are the only mammals that stretch out the teenage
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14.BIPEDALISMEXTENDEDCHILD - 11/15/09 BIPEDALISM AND THE...

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