Medically reviewed by Jennifer Steinhoff, MD The humerus is your upper arm bone. It is the longest bone in the upper part of ...

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 ...