Best Exercises for the Subscapularis 🧠 Want to learn more from me? Head to my profile and click the "Learn More" button to see all my latest articles and podcasts. The subscapularis is an important rotator cuff muscle that helps perform internal rotation of the shoulder, in addition to providing dynamic stability of the joint. 3 of my favorite exercises are pretty simple in nature based on EMG studies of subscapularis activity. IR at 0 and 90 degrees abduction have similar EMG activity of the s

Coracobrachialis Muscle Origin: Coracoid process of scapula. Insertion: Middle third of medial aspect of humerus. Action: Adducts and flexes arm at glenohumeral (shoulder) joint. Innervation: Musculocutaneous nerve (C5-C7). Arterial Supply: Brachial and anterior circumflex humeral arteries. The coracobrachialis muscle is found in the anterior compartment of the arm. It is a strap-like type of skeletal muscle. It is located: - anterior (superficial) to the subscapularis, teres major, latissimus d

Origin: The serratus anterior muscle originates from the: - external surfaces of the first to ninth ribs; - fascia covering the external intercostal muscles. There can be variations between individuals regarding the numbers of origin sites and the ribs to which they attach, with some only having origins on the first eight ribs, and others having origins on the first ten ribs. Insertion: The fibers of the serratus anterior muscle travel posteriorly and medially around the thoracic cage and insert