Origin: Humeroulnar head: medial epicondyle of humerus, ulnar collateral ligament, and coronoid process of ulna; Radial head: superior half of anterior border of radius
Insertion: Bodies of middle phalanges of digits 2 - 5
Action: Flexes middle phalanges at proximal interphalangeal joints of medial four digits; acting more strongly, it also flexes proximal phalanges at metacarpophalangeal joints and hand
Innervation: Median nerve (C7, C8 and T1)
Arterial Supply: Ulnar artery
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Upper Extremity
- Abductor Digiti Minimi
- Abductor Pollicis Brevis
- Abductor Pollicis Longus
- Adductor Pollicis
- Anconeus
- Biceps Brachii
- Brachialis
- Brachioradialis
- Coracobrachialis
- Deltoid
- Extensor Carpi Radialis Brevis
- Extensor Carpi Radialis Longus
- Extensor Carpi Ulnaris
- Extensor Digiti Minimi
- Extensor Digitorum
- Extensor Indicis
- Extensor Pollicis Brevis
- Extensor Pollicis Longus
- Flexor Carpi Radialis
- Flexor Carpi Ulnaris
- Flexor Digiti Minimi Brevis
- Flexor Digitorum Profundus
- Flexor Digitorum Superficialis
- Flexor Pollicis Brevis
- Flexor Pollicis Longus
- Infraspinatus
- Interosseous Muscles, Dorsal
- Interosseous Muscles, Palmar
- Latissimus Dorsi
- Levator Scapulae
- Opponens Digiti Minimi
- Opponens Pollicis
- Palmaris Longus
- Pectoralis Major
- Pectoralis Minor
- Pronator Quadratus
- Pronator Teres
- Rhomboid Major and Minor
- Serratus Anterior
- Subscapularis
- Supinator
- Supraspinatus
- Teres Major
- Teres Minor
- Trapezius
- Triceps Brachii