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Laboratory 7. Flexor Region of the Forearm
Step 12. Muscles in the Flexor Compartment of the Forearm, Deepest Layer

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The anterior interosseous branch of the median nerve and anterior interosseous artery pass distally on the anterior surface of the interosseous membrane. The anterior interosseous branch of the median nerve gives branches to the pronator quadratus muscle and joints of the wrist.

Finally, review the innervation of the muscles of the flexor compartment of the forearm. They are supplied by median and ulnar nerves. The median nerve supplies the pronator teres, pronator quadratus, palmaris longus, flexor carpi radialis, flexor digitorum superficialis, and flexor pollicis longus muscles, and the lateral half of the flexor digitorum profundus muscle. The ulnar nerve supplies the flexor carpi ulnaris muscle and the medial half of the flexor digitorum profundus muscle.

Links and References:
Grant's: 6.76-6.84
Netter (1ed.): 414, 416, 417, 421, 422, and 446 (2ed.): 410, 412, 413, 417, 418, and 442
R/Y: 367-369, 375, and 397