Flexor Digitorum Superficialis

Origin = (this muscle has three heads)

Humeral head - Medial epicondyle of the humerus by means of the common tendon.

Ulnar head - Medial aspect of the coronoid process.

Radial head - Oblique line of the radius.

Insertion = Sides of the base of the middle phalanges of the four fingers by four tendons.

Action = Flexion of the four fingers at the metacarpophalangeal and proximal interphalangeal joints; assistive in flexion of the wrist joint.


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