| The arm is enclosed in a sheath of deep fascia known as the brachial fascia. Two fascial intermuscular septa extend from the sheath of brachial fascia, and are attached to the medial and lateral supracondylar ridges of the humerus. The medial and lateral intermuscular septa divide the arm into anterior and posterior fascial compartments, each containing compartment) contains three muscles (biceps, brachialis, and coracobrachialis), their nerves and vessels. The posterior fascial compartment (extensor compartment) contains one muscle (triceps), its nerve and vessels. (Discussed further in Lab 4) |
