Muscles of the Upper Extremities - Extensor Pollicis Longus

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HOME » The Body » The Musculoskeletal System » The Muscles » Muscles of the Upper Extremity

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Major Muscles of Ant. Body
Major Muscles of Post. Body
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 Digitorum Profundus
Flexor Digiti Minimi Brevis
Flexor Digitorum Superficialis
Flexor Pollicis Brevis
Flexor Pollicis Longus
Infraspinatus
Interosseous Muscles
Latissimus Dorsi
Levator Scapulae
Opponens Digiti Minimi
Opponens Pollicis
Palmaris Longus
Pectoralis Major
Pectoralis Minor
Pronator Quadratus
Pronator Teres
Rhomboid Major and Minor
Subscapularis
Supinator
Supraspinatus
Teres Major
Teres Minor
Trapezius
Triceps Brachii

Extensor Pollicis Longus

Origin	Posterior surface of middle 1/3 of ulna and interosseous membrane
Insertion	Base of distal phalanx of thumb
Action	Extends distal phalanx of thumb at carpometacarpal and interphalangeal joints
Innervation	Posterior interosseous nerve (C7 and C8), the continuation of the deep branch of the radial nerve
Arterial Supply	Posterior interosseous artery

Extensor Pollicis Longus

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