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Flexor digitorum profundus muscle
| Flexor digitorum profundus muscle |
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| Ventral view of the deep muscles of the forearm. FDP is shown in blue. |
| Latin |
musculus flexor digitorum profundus |
| Gray's |
subject #125 448 |
| Origin: |
ulna |
| Insertion: |
distal phalanges |
| Artery: |
anterior interosseous artery |
| Nerve: |
median (anterior interosseous), muscular branches of ulnar |
| Action: |
flex hand, interphalangeal joints |
| Antagonist: |
Extensor digitorum muscle |
| Dorlands/Elsevier |
m_22/12549089 |
In human anatomy, the flexor digitorum profundus is a muscle in the forearm that flexes the fingers. It is considered to be an extrinsic muscle because its action is at a different location than the main body of the muscle.
Flexor digitorum profundus, along with flexor digitorum superficialis have long tendons that run down the arm and through the carpal tunnel and attach to the palmar side of the phalanges of the fingers. This muscle originates from the anterior side of the ulna.
Flexor digitorum profundus lies deep to superficialis, but it attaches more distally. To get around this problem profundus's tendons go through the tendons of superficialis, and end up attaching to the distal phalanx.
Innervation
Flexor digitorum profundus is innervated by the median and ulnar nerves.
- The medial aspect of the muscle (which flexes the 4th and 5th digit) is supplied by the ulnar nerve (C8, T1)
- The lateral aspect (which flexes the 2nd and 3rd digit) by the median nerve (via its anterior interosseous branch) (C8, T1).
It is one of two flexor muscles that is not exclusively supplied by the median nerve (the other is flexor carpi ulnaris).
Additional images
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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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This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Flexor_digitorum_profundus_muscle". A list of authors is available in Wikipedia.
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