Biceps brachii, like the name implies, is a two headed muscle on the anterior brachium. It has a long, lateral head and a short, medial head. Origin long head – supraglenoid tubercle of the scapula short head – coracoid process Insertion tuberosity of the radius Function flexion of the elbow supination of the radio-ulnar joints …
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 long head – infraglenoid tubercle of the scapula medial head – posterior humeral shaft, medial …
The coracobrachialis is a long muscle on the upper, inside edge of the upper arm. Origin tip of the coracoid process of the scapula Insertion medial shaft of the humerus Function flexes the shoulder (glenohumeral joint) adducts the shoulder some medial rotation of the shoulder Innervation musculocutaneous nerve (C5-7) The coracobrachialis is typically a …
