Muscles of Flexor Forearm

Question 1

Muscles of Flexor forearm

Answer 1

1. pronator teres
2. flexor carpi radialis
3. palmaris longus
4. flexor carpi ulnaris
5. flexor digitorum superficialis
6. flexor digitorum profundus
7. flexor pollicis longus
8. pronator quadratus

Question 2

Superficial layer of forearm flexor muscles

Answer 2

1. pronator teres
2. flexor carpi radialis
3. palmar longus
4. flexor carpi ulnaris

Question 3

Pronator Teres

Answer 3

O- humeral head- medial epicondyle by common flexor tendon
ulnar head- coronoid process of ulna
I- mid shaft of radius
A- pronates and slightly flexes forearm
N- median Nerve

Question 4

Flexor Carpi Radialis

Answer 4

O- medial epicondyle of humerus by common flexor tendon
I- base of 2nd and 3rd metacarpal
A- flexes wrist and abducts hand
N-median nerve

Question 5

Palmaris Longus

Answer 5

O- medial epicondyle of humerus by common flexor tendon
I- palmar aponeurosis
A- Flexes wrist
N- median nerve

Question 6

Flexor Carpis Ulnaris

Answer 6

O- Medial Epicondyle of humerus; ulnar head- medial border of olecranon process and proximal dorsal surface of ulna
I- pisiform, hamate, and base of 5th metacarpal
A- Flexes wrist and adducts hand
N- ulnar nerve

Question 7

intermediate layer of forearm flexor muscles

Answer 7

1. Flexor digitorum superficialis

Question 8

Flexor retinaculum

Answer 8

• specialized deep fascia
• run concavity created by carpal bone
• attaches to trapezium and scaphoid (laterally) and hamate and pisiform (medially)
• forms carpal tuner (fibro-osseous canal)
• tendons of intermediate and deep muscles and median nerve pass through tunnel

Question 9

Flexor digitorum superficialis

Answer 9

O- humeral head- medial epicondyle and cornoid process of ulna; radial head proximal 1/2 anterior border radius
I- Palmar aspects of middle phalanges, digits 2-5 (tendon bifurcates)
A- flexes proximal interphalangeal joint, assists in flexion of Metacarophalangeal joints, wrist, and forearm
N- median nerve

Question 10

Deep layer of forearm flexor muscles

Answer 10

1. flexor digitorum profundus
2. flexor pollicis longus
3. pronator quadratus

Question 11

Flexor digitorum profundus

Answer 11

O- proximal 2/3 medial anterior surface of ulna and adjacent interosseous membrane
I- palmar surface of distal phalanges 2-5
A-flexes distal interphalangeal joints; assists in flexion of proximal IP, MP, and wrist joints
N- lateral (digits 2-3)- median nerve
medial (digits 4-5)- ulnar nerve

Question 12

Flexor pollicis longus

Answer 12

O-anterior surface of radius
I- palmar surface base of distal phalanx of thumb
A- flexes thumb
N- median nerve

Question 13

Pronator Quadratus

Answer 13

O-Distal 1/4 of anterior surface of ulna
I- Distal 1/4 of anterior surface of radius
A- pronates hand
N- median nerve