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The Biceps Brachii is composed of two heads: long head and short head.
- The biceps brachii attaches from the supraglenoid tubercle of the scapula (long head) and coracoid process of the scapula (short head) to the radial tuberosity and the bicipital aponeurosis.
- Flexes the forearm at the elbow joint
- Supinates the forearm at the radioulnar joints
- Flexes the arm at the glenohumeral joint
- Abducts the arm at the glenohumeral joint (long head)
- Adducts the arm at the glenohumeral joint (short head)
- Flexes the arm at the elbow joint (reverse closed-chain action)
- The biceps brachii is one of the three “B”s of elbow joint flexion. The other two are the brachialis and brachioradialis.
- The proximal tendon of the long head of the biceps brachii travels (intra-articularly) through the glenohumeral joint to reach the supraglenoid tubercle of the scapula.