Bicep brachii

Origin: scapulaInsertion: radius

flexion at elbow and

shoulder;supination

Brachialis

Origin: humerusInsertion: ulna

flexion at elbow

Brachioradialis

Origin: humerusInsertion: radius

Flexion at elbow

Anconeous

Orgin: humerusInsertion: ulna Extension at elbow

Triceps brachii

Origin: humerus/scapulaInsertion: ulna

Extension at elbow

Pronator quadratus

Origin: ulnaInsertion: radius

Pronation

Pronator teres

Origin: humerus/ulnaInsertion: radius

Pronation

Supinator

Origin: humerus/ulnaInsertion: radius Supination

Flexor carpi radialis

Origin: humerusInsertion: base of 2nd, 3rd metacarpal flexion and abduction

at wrist

Flexor carpi ulnaris

Origin: humerusInsertion: pisiform, hamate, and base of 5th metacarpal flexion and adduction

at wrist

Palmaris longus

Origin: humersuInsertion: palmar aponeurosis and flexor retinaculum

flexion at

wrist

Extensor carpi radialis longus

Origin: humerusInsertion: base of 2nd metacarpal

extension and abduction at wrist

Extensor carpi radialis brevis

Origin: humerusInsertion: base of 3rd metacarpal extension and abduction at wrist

Extensor carpi ulnaris

Origin: humerus; ulnaInsertion: base of 5th metacarpal

Extension and adduction at wrist

Abductor pollicis longus

Origin: ulna and radiusInsertion: 1st metacarpal

Abduction at joints of thumb and wrist

Extensor digitorum

Origin: humerusInsertion: fingers 2-5 phalanges

Extension at finger joints and wrist

Extensor pollicis brevisExtensor pollicis longus

Origin:humerusInsertion: thumb Extension at joints of thumb; abduction at wrist

Extensor indicis

Origin: ulna and interosseous membraneInsertion: phalanges of index finger Extension and adduction at joints of index finger

Extensor digiti minimi

Origin: humerusInsertion: proximal phalanx of little finger

Extension at joints of little finger

Flexor digitorum superficialis

Origin: humerus, ulnaInsertion: middle phalanges 2-5

Flexion at proximal interphalangeal, metacarpophalngeal, and wrist joints

Flexor digitorum profundus

Origin:ulna, coronoid processInsertion: distal phalanges 2-5 Flexion at distal interphalangeal joints and, to a

lesser degree, proximal interphalnageal joints and wrist

Flexor pollicis longus

Origin: radiusInsertion: distal phalanx thumb

Flexion at joints of thumb

Adductor pollicis

Origin: metacarpal and carpal bonesInsertion: proximal phalanx of thumb

Adduction of thumb

Opponens pollicis

Origin: trapeziumInsertion: 1st metacarpal

Opposition of thumb

Palmaris brevis

Origin: palmar aponeurosisInsertion: skin of medial border of hand

moves skin on medial border toward midline of plam

Abductor digiti minimi

Origin: pisiformInsertion: proximal phalanx of little finger Abduction of little finger and flexion at its

metacarpophalngeal joint

Abductor pollicis brevis

Origin: transverse carpal ligament, scaphoid, trapeziumInsertion: proximal phalanx of thumb

Abduction of thumb

Flexor pollicis brevis

Origin: flexor retinaculum, trapezium, capitateInsertion: proximal phalanx of thumb Flexion and adduction of thumb

Flexor digiti minimi brevis

Origin: hamateInsertion: proximal phalanx of little finger

Flexion at joints of little finger

Opponens digiti minimi

Origin: hamateInsertion: 5th metacarpal

Opposition of fifth metacarpal bone

Lumbrical

Origin: flexor digitorum profundusInsertion: extensor digitorum

Flexion at metacarpophalangeal joints 2-5; extension at proximal and distal interphalangeal joints, digits 2-5

Dorsal interosseus

Origin: metacarpalsInsertion: proximal phalanges of fingers 2-4

Abductin at metacarpophalngeal joints of fingers 2 and 4; flexion at metacrpophalngeal joint; extension at interphalangeal joints

Palmar interosseus

Origin: metacarpal bones II, IV, VInsertion: proximal phalanges of fingers 2, 4, and 5 Adduction at metacrpophalangeal joints of fingers

2,4, and 5; flexion at metacarpophalangeal joints; extension at interphalangeal joints