Muscles of the Upper Limbs
The muscles of the upper limb can be categorized as the following regions:
The muscles of this region typically act to flex, extend, abduct, as well as internally and externally rotate.
The muscles of this region typically act to adduct, depress, and rotate the arm forward.
The muscles of this region typically act to flex the forearm at the elbow joint and adduct the arm at the shoulder joint. Other actions include supination, extension, and abduction.
The muscles in this region typically act to flex and abduct the wrist, as well as extension of the hand at the wrist joint, and extension of the digits.
The muscles in this region typically act to move the hand and digits.