From Wikipedia, the free encyclopedia
The anterior compartment of the arm is known as the "flexor compartment" as flexion is its main action.
The muscles contained therein are the biceps brachii, brachialis, and coracobrachialis.
They are all supplied by the musculocutaneous nerve, which arises from the fifth, sixth, and seventh cervical spinal nerves (see Brachial plexus).
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Muscles of upper limbs |
| VERTEBRAL COLUMN: trapezius - latissimus dorsi - rhomboid major - rhomboid minor - levator scapulae
ANTERIOR AND LATERAL THORACIC WALLS: pectoralis major - pectoralis minor - subclavius - serratus anterior
SHOULDER: deltoid - rotator cuff (supraspinatus, infraspinatus, teres minor, subscapularis) - teres major
ARM: anterior compartment: coracobrachialis - biceps brachii - brachialis
posterior compartment: triceps brachii - anconeus
FOREARM: anterior compartment super. - pronator teres - palmaris longus - flexor carpi radialis - flexor carpi ulnaris - flexor digitorum superficialis
deep - pronator quadratus - flexor digitorum profundus - flexor pollicis longus
posterior compartment super. - mobile wad (brachioradialis, extensor carpi radialis longus and brevis) - extensor digitorum, - extensor digiti minimi - extensor carpi ulnaris
deep - supinator - anatomical snuff box (abductor pollicis longus, extensor pollicis brevis, extensor pollicis longus) - extensor indicis
HAND: Lateral volar - abductor pollicis brevis - thenar (opponens pollicis, flexor pollicis brevis, adductor pollicis)
Medial volar - palmaris brevis - hypothenar (abductor minimi digiti, flexor digiti minimi brevis, opponens digiti minimi)
Intermediate - lumbrical - dorsal interossei - palmar interossei
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