(ON THE LEFT SIDE ONLY) Identify the deep muscles of the anterior compartment of the forearm. (G 2.66B;N 434;Gl 26.10C) You will be keeping superfical forearm and hand structures intact on the right side.
- Identify the flexor digitorum profundus muscle and its tendons. Tug on the tendons and observe which fingers flex.
- Identify the flexor pollicis longus muscle and its tendon. Tug on this tendon and verify that the thumb flexes.
- Reflect the tendons of the flexor pollicis longus and flexor digitorum profundus and identify the pronator quadratus muscle. Attempt to identify the anterior interosseous artery and the anterior interosseous branch of the median nerve.
Important Relationships
- The ulnar artery is positioned lateral (deep) to the flexor carpi ulnaris muscle.
- The ulnar nerve passes directly posterior to the humerus (medial epicondyle).
- The ulnar nerve is positioned lateral (deep) to the tendon of the flexor carpi ulnaris muscle.
