Muscles of the Forearm - Flexor Group / Deep Layer

Question 1

Flexor Digitorum Profundus

Answer 1

O: anterior and medial surfaces of the proximal two-thirds of ulna + interosseous membrane + aponeurosis of flexor carpi ulnaris

I: distal phalanx of each of the four fingers

A: flexion of distal phalanx of each of the four fingers

In: median and ulnar nerves

Question 2

Flexor Pollicis Longus

Answer 2

O: anterior surface of the middle half of the radius + adjacent interosseous membrane

I: distal phalanx of the thumb

A: flexion of the distal phalanx of the thumb

In: median nerve

Question 3

Pronator Quadratus

Answer 3

O: distal fourth of ulna

I: distal part of radius

A: pronation of forearm and hand

In: median nerve