UPPER LIMB

Question 1

<p>What are the superficial flexors of the forearm? (anterior muscles)</p>

Answer 1

1) Pronator teres
2) Flexor carpi radialis
3) Palmaris longus
4) Flexor digitorum superficialis
5) Flexor carpi ulnaris

Question 2

<p>What are the deep flexors of the forearm? (anterior muscles)</p>

Answer 2

Flexor digitorum profundus
Flexor pollicis longus
Pronator quadratus (underneath)

Question 3

<p>What are the superficial extensors of the forearm? (posterior muscles)</p>

Answer 3

1) Extensor carpi radialis longus
2) Extensor carpi radialis brevis
3) Extensor digitorum
4) Extensor digiti minimi
5) Extensor carpi ulnaris

Question 4

<p>What are the deep extensors of the posterior forearm? (posterior muscles</p>

Answer 4

Supinator
Abductor pollicis longus
Extensor pollicis brevis
Extensor pollicis longus
Extensor indicis

Question 5

<p>Nerve supply of muscles in the arm</p>

Answer 5

Arm flexors (anterior) = musculocutaneous
Arm extensors (posterior) = radial
Forearm flexors (anterior) = median EXCEPT Flexor Carpi Ulnaris + 1/2 Flexor digitorum profundus 9both ulnar) + Brachioradialis (radial)
Hand flexors = ulnar EXCEPT LLOAF

Question 6

<p>Origin of the pectoralis major</p>

Answer 6

<p>CLAVICULAR HEAD - Medial 1/3 of the clavicle

| STERNOCOSTAL HEAD - sternum and costal cartilages</p>

Question 7

<p>Insertion of pectoralis major</p>

Answer 7

<p>Bicipital groove of shaft of humerus</p>

Question 8

<p>Action of pectoralis major</p>

Answer 8

<p>CLAVICULAR FIBRES - flex the humerus
STERNOCOSTAL FIBRES - adduct and medially rotate humerus at shoulder joint
If upper limb is abducted and fixed it can move the ribs and act as an accessory muscle in respiration</p>