Biceps brachii anatomy, as the name implies, is a two-headed muscle on the anterior brachium. It has a long lateral head and a short medial head. Origin Insertion Function Innervation The subscapularis is woven between the upper attachments of the biceps brachii. It extends under the coracoid process to the medial lip of the bicipital […]
The triceps brachii, as the name implies, is a 3 headed muscle on the posterior upper arm. It has a lateral, medial, and long head. The long head attaches to the scapula and ulna, trapping the humerus in-between them. Origin Insertion Function Innervation The Triceps brachii is woven with the muscles and neurovascular bundle of
The coracobrachialis is a long muscle on the upper, inside edge of the upper arm. Origin Insertion Function Innervation The coracobrachialis is typically a long single belly but does have clinically significant variations. The coracobrachialis is one of three muscles that attach to the coracoid process of the scapula. It usually attaches to the
