There are more than 600 muscles in the human body. Muscles are attached to the bone by tendons and work in pairs to allow for smooth movement. To move a joint, one muscle contracts while the other ...

Body size is ... The evolution of the human foot, part II. American Journal of Physical Anthropology 1, 1-52 (1924). Napier, J. R. Evolutionary aspects of primate locomotion.

The results of the study also state the presence of arboreal locomotion in Australopithecus sediba—a still little-known ...