Muscles of the Anterior Fascial Compartment of the Forearm

Question 1

PT Humeral head

Answer 1

O - Medial epicondyle of the humerus
I - Lateral aspect of shaft of radius
N - Median nerve
N - C6, 7
A - Pronation and flexion of forearm

Question 2

PT Ulnar head

Answer 2

O - Medial border of coronoid process of ulna
I - Lateral aspect of shaft of radius
N - Median nerve
N - C6, 7 
A - Pronation and flexion of forearm

Question 3

Flexor carpi radialis

Answer 3

O - Medial epicondyle of humerus
I - Bases of second and third metacarpal bones
N - Median nerve
N - C6, 7
A - Flexes and abducts hand at wrist joint

Question 4

Palmaris longus

Answer 4

O - Medial epicondyle of humerus
I - Flexor retinaculum and palmar aponeurosis
N - Median nerve
N - C7, 8
A - Flexes hand

Question 5

FCU Humeral head

Answer 5

O - Medial epicondyle of humerus
I - Pisiform bone, hook of hamate, base at fifth metacarpal bone
N - Ulnar nerve
N - C8, T1
A - Flexes and adducts hand at wrist joint

Question 6

FCU Ulnar head

Answer 6

O - Medial aspect of olecranon process and posterior border of ulna
I - Pisiform bone, hook of hamate, base of fifth metacarpal bone
N - Ulnar nerve
N - C8, T1
A - Flexes and adducts hand at wrist joint

Question 7

FDS Humeroulnar head

Answer 7

O - Medial epicondyle of humerus; medial border of coronoid process of ulna
I - Middle phalanx of medial four phalanges
N - Median nerve
N - C7, 8, T1
A - Flexes middle phalanx of fingers and assists in flexing proximal phalanx and hand

Question 8

FDS Radial head

Answer 8

O - Oblique line on anterior surface of shaft of radius
I - Middle phalanx of medial four phalanges
N - Median nerve
N - C7, 8, T1
A - Flexes middle phalanx of fingers and assists in flexing proximal phalanx and hand

Question 9

Flexor pollicis longus

Answer 9

O - Anterior surface of shaft of radius
I - Distal phalanx of thumb
N - Anterior interosseous branch of median nerve
N - C8, T1
A - Flexes distal phalanx of thumb

Question 10

Flexor pollicis profundus

Answer 10

O - Anteromedial surface of shaft of ulna
I - Distal phalanges of medial four fingers
N - Ulnar (medial half) and median (lateral half) nerves
N - C8, T1
A - Flexes distal phalanx of fingers; then assists in flexion of middle and proximal phalanges and wrist

Question 11

Pronator quadratus

Answer 11

O - Anterior surface of shaft of ulna
I - Anterior surface of shaft of radius
N - Anterior interosseous branch of median nerve 
N - C8, T1
A - Pronates forearm