The Forearm and Wrist

Question 1

Extensor digitorum communis?

Answer 1

Attached - from lateral epicondyle to extensor hood of each finger
Actions - extends medial four fingers at the MCP and IP joints
Innervation - radial nerve

Question 2

Extensor digiti minimi?

Answer 2

Attachment - originates from lateral epicondyle, attaches into extensor hood of little finger
Function - extends little finger
Innervation - radial nerve

Question 3

Extensor carpi ulnar is?

Answer 3

Attachment - from lateral epicondyle and attached to base of metacarpal V
Function - extension and adduction of wrist
Innervation - radial nerve

Question 4

Supinator ?

Answer 4

Attachment - originates from lateral epicondyle and insert to posterior surface of the radius
Function - supinates forearm
Innervation- radial nerve

Question 5

Abductor pollicis longus ?

Answer 5

Attachment - attached to the lateral side of metacarpal 1
Function - abducts thumb
Innervation - radial nerve

Question 6

Extensor pollicis brevis?

Answer 6

Attachment - to base of the proximal phalanx of the thumb
Function - extends at the metacarpophalangeal and carpometacarpal joints of the thumb
Innervation - radial nerve

Question 7

Extensor pollicis longus ?

Answer 7

Attachment - distal phalanx of the thumb
Function - extends all joints of the thumb
Innervation - radial nerve

Question 8

Extensor indicis proprius?

Answer 8

Attachment - to extensor hood of the index finger
Function - extends the index finger
Innervation - radial nerve

Question 9

Brachioradialis. ?

Answer 9

Attachment - joins to the distal end of the radius
Function - flexes at elbow
Innervation - radial nerve

Question 10

Extensor carpi radialis longus and brevis ?

Answer 10

Attachment - attach to metacarpal bones 2 and 3
Function - extends and abducts wrists
Innervation - radial nerve

Question 11

Flexor carpi ulnaris?

Answer 11

Attachment - to pisiform carpal bone
Function - flexion and adduction at the wrist
Innervation - ulnar nerve

Question 12

Palmaris longus ?

Answer 12

Attachment - at flexor retinaculum of the wrist
Function - flexion at the wrist
Innervation - median nerve

Question 13

Flexor carpi radialis?

Answer 13

Attached to base of metacarpals 2 and 3
Functions - flexion and abduction at the wrist
Innervation - median nerve

Question 14

Pronator teres?

Answer 14

Attachment - laterally to the mid shaft of the radius
Functions - pronation of the forearm
Innervation - median nerve

Question 15

Flexor digitorum superficialis?

Answer 15

Attached to middle phalanges office the 4 fingers
Function - flexes metacarpophalangeal joints and proximal interphalangeal joints at the 4 fingers and flexes the wrist
Innervation - median nerve

Question 16

Flexor digitorum profundus?

Answer 16

Attachment - distal phalanges of 4 fingers
Function - flexes metacarpophalangeal joints at wrist
Innervation - ulnar nerve and median nerve

Question 17

Flexor pollicis longus?

Answer 17

Attached to base of distal phalanx of the thumb
Function - flexes and interphalangeal joint and metacarpophalangeal joint of the thumb
Innervation - median nerve

Question 18

Pronator quadratus?

Answer 18

Attached to anterior surface of the radius
Actions - pronates the forearm
Innervation - median nerve