To get a picture of how Lucy's species, Australopithecus afarensis, moved, scientists compare fossils to the bones of modern humans, as well as to the anatomy ... Lucy: arm bones With dangling ...

A pitcher can use the same anatomy to throw a ball at a hundred ... same cluster of wrist bones connected to the same long bones of the arm. When Charles Darwin wrote Origin of Species, he singled ...

Understanding Forearm Anatomy The forearm consists of two bones—one on the lateral side and one on the medial side—along with multiple muscles that control wrist, hand, and finger movement.