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부르지 않으며 앞발이라 부른다. 그러나 해부학적으로 손을 정의하는 기준인 ‘다른 손가락들과 맞댈 수 있는 엄지(opposable thumb)’가 달린 앞발은 관용적으로 손이라 지칭할 수 있다. 이런 앞발은 손가락을 이용해 사물을 움켜쥐고 집어올리는 등 손의...

is an exacting specialty. The myriad motions that can be performed by the fingers, not to mention our unique opposable thumb, require an extensive network of bones, joints, tendons, ligaments, blood vessels, and nerves. Medical...

and chattered in monkeylike fashion, but unlike the simian tribes, they were flesh eaters. They had a primitive opposable thumb as well as a highly useful grasping big toe. From this point onward the prehuman species successively...

that had previously been found only in more recent ancestors. That muscle gave Australopithecus robustus an opposable thumb, a feature that would allow them to grip objects, including tools. The researchers also found primitive bone and...