Muscles of the Forearm - Flexor Group / Superficial Layer

Question 1

Pronator Teres

Answer 1

O: medial epicondyle of humerus + coranoid process of ulna

I: lateral surface of the midshaft of radius

A: pronation of forearm

In: median nerve

Question 2

Palmaris Longus

Answer 2

O: medial epicondyle of the humerus

I: palmar aponeurosis

A: flexion of the hand

In: median nerve

Question 3

Flexor Carpi Radialis

Answer 3

O: medial epicondyle of the humerus

I: base of second metacarpal and possibly third

A: flexion and abduction (radial deviation) of hand

In: median nerve

Question 4

Flexor Carpi Ulnaris

Answer 4

O: medial epicondyle of humerus + proximal two-thirds of posterior surface of ulna

I: pisiform bone

A: flexion and adduction (ulnar deviation) of the hand

In: ulnar nerve