Anterior Forearm Muscles

Question 1

Pronator Teres

Answer 1

A.S
O: medial epi & coronoid process
I: middle lateral radius
A: pronation forearm

Question 2

Flexor carpi radialis

Answer 2

A.S
O: m epi
I: base of 2-3rd metacarpal
A: flexion & abduction of wrist

Question 3

Palmaris longus

Answer 3

A.S
O: m epi
I: palmar aponeurosis, flexor retinaculum
A: flexion of wrist

Question 4

Flexor carpi ulnaris

Answer 4

A.S
O: humeral head: medial epi
Ulnar head: posterior surface of proximal 2/3 ulna
I: base of 5th metacarpal, pisiform, hook of hamate
A: flexion, adduction wrist

Question 5

Flexor digitorum superficialis

Answer 5

A.M
O: M epi, ulnar collateral lig, coronoid process ulna, proximal shaft of radius, interosseus membrane
I: medial & lateral of middle phalanges 2-5
A: flexion of wrist, mcp, pip, 2-5

Question 6

Flexor digitorum Profundus

Answer 6

A.D
O: anterior medial of proximal 3/4 ulna
I: palmar surfaces of bases of distal phalanges 2-5
A: flexion wrist mcp, pip, dip 2-5

Question 7

Flexor pollicis longus

Answer 7

A.D
O: anterior/middle shaft of radius & interosseous membrane
I: base of distal phalanx of thumb
A: flexion cmc, mcp, ip of thumb

Question 8

Pronator Quadratus

Answer 8

A.D
O: medial anterior distal ulna
I: lateral anterior distal radius
A: pronation of forearm

Question 9

Extensor carpi radialis longus

Answer 9

P.S
O: distal 1/3 lateral supracondylar ridge humerus
I: base of 2nd metacarpal
A: extension & abduction wrist

Question 10

Extensor carpi radialis brevis

Answer 10

P.S
O: lateral epi
I: base of 3rd metacarpal
A: extension and abduction wrist

Question 11

Extensor digitorum

Answer 11

P.S
O: lateral epi
I: middle & distal phalanges of digits 2-5
A: extension of wrist mcp, pip, dip digits 2-5

Question 12

Extensor digit minimi

Answer 12

P.S
O: lateral epi
I: dorsal, middle, distal phalange of 5th digit
A: extends 5th Mcp joint

Question 13

Extensor carpi ulnaris

Answer 13

P.S
O: lateral epicondyle
I: base of 5th metacarpal
A: extension & adduction wrist

Question 14

Anconeus

Answer 14

P.S
O: lateral epicondyle
I: Olecranon process ulna
A: extension elbow

Question 15

Brachioradialis

Answer 15

P.S
O; lateral supracondylar ridge humerus
I: lateral distal radius
A: flexion elbow, supination & pronation forearm

Question 16

Supinator

Answer 16

P.D
O: lateral epi, radial collateral lig, annular lig, supinator crest ulna
I: anterior lateral proximal 1/3 radius
A: supination forearm

Question 17

Abductor pollicis longus

Answer 17

P.D
O: proximal dorsal radius & ulna& interosseous membrane
I: base of 1st metacarpal
A: abduction & extension of thumb, abduction of wrist

Question 18

Extensor pollicis brevis

Answer 18

P.D
O: posterior distal 1/3 radius, interosseous membrane
I: base of proximal phalange of thumb A
A: extension CMC & MCP of thumb, abduction wrist

Question 19

Extensor pollicis longus

Answer 19

P.D
O: Posterior middle ulna, interosseous memebrane
I: base of distal phalange of thumb
A: extension of cmc, mcp, ip of thumb & abduction of wrist

Question 20

Extensor indicis

Answer 20

P.D
O: posterior distal ulna & interosseous membrane
I: extensor digitorum tendon of 2nd metacarpal
A: extension & adduction at index finger