Anatomy of Bipedalism

Slide 79 of 109

Bipedalism requires adjustments to the inner ear, since bipedal animals must be able to balance on two legs. There are major changes in the feet, which include a reduction in the size of the toes, a non-opposable hallux (big toe), which is relocated in line with the other toes, and the formation of an foot arch (as opposed to flat feet). The redesigned foot forms a platform to be able to support the entire weight of the body.