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The muscles that act on the hand can be divided into two groups: Extrinsic muscles located in the anterior and posterior compartments of the forearm.
The muscles in the anterior compartment of the forearm are organised into three layers .
The flexor digitorum superficialis flexes the middle phalanges of the medial four digits at the proximal interphalangeal joints .
Extensor digitorum is a long muscle located in the posterior compartment of the forearm.
human lower limb muscles anatomy medical 3d animation
Palmar interosseous muscles of right hand .
The shoulder has about eight muscles that attach to the scapula, humerus, and clavicle .

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1106688881

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Nervous system in hand and arm .

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