Forearm, Wrist & Hand

Question 1

Pronator Teres

Answer 1

O- humeral (superficial) head: medial epichondyle via common flexor tendon
ulnar (deep) head: coronoid process of ulna

I- lateral radius middle of shaft

A- pronation of forearm

N- median nerve

Question 2

Flexor Carpi Radialis

Answer 2

O- medial epichondyle

I- base of 2nd & 3rd metacarpals

A- flexion of wrist
radial deviation

N- median nerve

Question 3

Palmaris Longus

Answer 3

O- medial epichondyle

I- palmer aponeurosis & flexor retinaculum

A- flexion of wrist

N- median nerve

Question 4

Flexor Carpi Ulnaris

Answer 4

O- humeral head: medial epichondyle
ulnar head: medial aspect of olecranon & proximal 2/3 of medial ulna

I- pisiform & hamate bones
base of 5th metacarpal

A- flexion of wrist
ulnar deviation

N- ulnar nerve

Question 5

Flexor Digitorum Superficialis

Answer 5

O- humeral-ulnar head: medial epichondyle
radial head: oblique line of radius

I- base of middle phalanges of fingers 2-5

A- flexion of fingers 2-5

N- median nerve

Question 6

Flexor Digitorum Profundus

Answer 6

O- anterior & medial surface of ulna & interosseous membrane

I- base of distal phalange of fingers 2-5

A- flexion of fingers 2-5

N- median & ulnar nerve

Question 7

Flexor Pollicis Longus

Answer 7

O- radius & interosseous membrane

I- base of distal phalanx of thumb

A- flexion of thumb

N- median nerve

Question 8

Pronator Quadratus

Answer 8

O- anterior distal ulna

I- anterior distal radius

A- pronation of forearm

N- median nerve

Question 9

Brachioradialis

Answer 9

O- lateral suprachondylar ridge of humerus

I- styloid process of radius

A- flexion of elbow

N- radial nerve

Question 10

Extensor Carpi Radialis Longus

Answer 10

O- lateral distal 1/3 suprachondylar ridge of humerus

I- base of 2nd metacarpal

A- extension of wrist
radial deviation

N- radial nerve

Question 11

Extensor Carpi Radialis Brevis

Answer 11

O- lateral epichondyle

I- base of 3rd metacarpal

A- extension of wrist
radial deviation

N- radial nerve

Question 12

Extensor Digitorum

Answer 12

O- lateral epichondyle of humerus

I- mid & distal phalanges of fingers 2-5

A- extension of fingers 2-5
extension of wrist

N- radial nerve

Question 13

Extensor Digiti Minimi

Answer 13

O- lateral epichondyle of humerus

I- middle & distal phalanges of 5th digit

A- extension of little finger

N- radial nerve

Question 14

Anconeus

Answer 14

O- lateral epichondyle of humerus

I- lateral posterior olecranon process

A- extension of elbow

N- radial nerve

Question 15

Extensor Carpi Ulnaris

Answer 15

O- humeral head: lateral epichondyle
ulnar head: mid posterior shaft of ulna

I- base of 5th metacarpal

A- ulnar deviation
extension of wrist

N- radial nerve

Question 16

Supinator

Answer 16

O- lateral epichondyle of humerus & supinator crest of lateral ulna

I- proximal 1/3 of radius

A- supination of forearm

N- radial nerve

Question 17

Abductor Pollicis Longus

Answer 17

O- posterior surfaces of ulna, radius & interosseus membrane

I- base of 1st metacarpal

A- abduction of thumb

N- radial nerve

Question 18

Extensor Pollicis Brevis

Answer 18

O- posterior distal 1/3 surfaces of radius & interosseous membrane

I- base of proximal phalanx of thumb

A- extension of proximal phalanx

N- radial nerve

Question 19

Extensor Pollicis Longus

Answer 19

O- posterior middle 1/3 of ulna & interosseous membrane

I- distal phalanx of thumb

A- extension of thumb

N- radial nerve