Biceps brachii muscle

From Freepedia

In human anatomy, the biceps brachii is a muscle on the upper arm that acts to flex the elbow. It is arguably the best known muscle, as it lies fairly superficially, and is often well-defined even in non-athletes.

It is given the name biceps because it has two heads, and brachii comes from the Latin word for arm.

Distally, biceps attaches to the radial tuberosity, and because this bone can rotate, the biceps also supinates the forearm. The biceps also connects with the fascia of the medial side of the arm, at the bicipital aponeurosis.

Proximally, the short head of biceps attaches to the coracoid process of the scapula. The tendon of the long head passes into the joint capsule at the head of the humerus, and attaches on the scapula at the supraglenoid tubercle.

The muscle is popular amongst bodybuilders, and can grow quite large through weight lifting. The world record size for largest bicep is 30 inches.[1]

See also

• biceps

Muscles of the upper limb

The muscles connecting the upper extremity to the vertebral column: levator scapulae muscle | rhomboid major muscle | rhomboid minor muscle | trapezius muscle | serratus anterior muscle | latissimus dorsi muscle The muscles connecting the upper extremity to the anterior and lateral thoracic walls: pectoralis major muscle | pectoralis minor muscle | subclavius muscle The muscles of the shoulder and musculotendinous cuff: deltoid muscle | infraspinatus muscle | subscapularis muscle | supraspinatus muscle | teres major muscle | teres minor muscle The muscles of the arm: anconeus muscle | biceps brachii muscle | brachialis muscle | triceps brachii muscle | coracobrachialis muscle The muscles of the forearm: brachioradialis muscle | extensor carpi radialis brevis muscle | extensor carpi radialis longus muscle | extensor carpi ulnaris muscle | extensor digiti minimi | extensor digitorum muscle | extensor pollicis longus muscle | flexor carpi radialis muscle | flexor carpi ulnaris muscle | flexor digitorum profundus muscle | flexor digitorum superficialis muscle | flexor pollicis brevis muscle | flexor pollicis longus muscle | pronator quadratus muscle | pronator teres muscle | palmaris longus muscle | supinator muscle The muscles of the hand: abductor pollicis brevis muscle | abductor pollicis longus muscle | adductor pollicis muscle | dorsal interossei muscles | extensor pollicis brevis muscle | palmar interossei muscles | palmaris brevis muscle | opponens digiti minimi muscle | opponens pollicis muscle | lumbrical muscles