Anterior compartment of the arm

Anterior compartment of the arm

Cross-section through the middle of upper arm.
Artery	brachial artery
Nerve	musculocutaneous nerve

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).

v • d • e General anatomy of upper limbs
Arm	Clavipectoral triangle • spaces (Quadrangular space, Triangular space, Triangular interval) • Axilla • Axillary sheath • Anterior axillary fold • compartment of arm (Posterior, Anterior) • intermuscular septa (Lateral, Medial) • fascia (Axillary, Brachial)
Forearm	Cubital fossa (Bicipital aponeurosis) • common tendons (Extensor, Flexor) • Interosseous membrane of the forearm • compartment of forearm (Posterior, Anterior) • Carpal tunnel • fascia (Antebrachial fascia)
Hand	Anatomical snuff box • reticula of the hand (Extensor, Flexor) • Finger • Extensor expansion • Palmar aponeurosis

v • d • e List of muscles of upper limbs
VERTEBRAL COLUMN	trapezius - latissimus dorsi - rhomboid (major, minor) - levator scapulae
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 - thenar (opponens pollicis, flexor pollicis brevis, abductor 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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