Nerves Of Brachial Plexus

The brachial plexus is associated with spinal nerves C4-8 and T1. It leads to major nerves of the shoulder and arm. The axillary nerve arises from the brachial plexus and innervates the deltoid and the teres minor muscles. It also receives stimulation from the skin of the shoulder and lateral upper limb. The radial nerve innervates the triceps brachii muscle and the extensors of the forearm and hand. The musculocutaneous nerve innervates the anterior muscles of the arm (biceps brachii, brachialis, and coracobrachialis) and the skin on the lateral side of the forearm. The median nerve runs the length of the arm and forearm and innervates the anterior muscles of the forearm and the muscles associated with the thumb. The ulnar nerve passes along the posterior side of the medial epicondyle of the humerus and gives that tingling sensation of the "funny bone" when hit. It innervates the muscles of the medial side of the anterior hand. Label these nerves and related structures and color them in. Select a different color for each nerve.

Nerves And

First rib Axillary artery

Answer Key: a. C4, b. C5, c. C6, d. C7, e. C8, f. T1, g. Axillary nerve, h. Musculocutaneous nerve, i. Radial nerve, j. Median nerve, k. Ulnar nerve, I. Vertebra C4

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  • alexander
    What nerve hits the corocobrachialis?
    6 years ago

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