Upper Limb 3

Question 0

Muscles that extend the medial four digits:

Answer 0

Extensor digitorum
Extensor indicis
Extensor digiti minimi

Question 1

Muscles that extend and abduct or adduct the hand at the wrist joint:

Answer 1

Extensor Carpi radialis longus
Extensor Carpi Radialis brevis
Extensor Carpi ulnaris

Question 2

Muscles that extend or abduct the thumb:

Answer 2

Abductor pollicis longus (APL)
Extensor pollicis brevis (EPB)
Extensor pollicis longus (EPL)

Question 3

Muscles that adduct and medially rotate arm

Answer 3

Pectoralis major
Latissimus dorsi
Teres major
Subscapularis

Question 4

Muscles that flex arm

Answer 4

Biceps brachii
Coracobrachialis
Deltoid (clavicular head)

Question 5

Muscles that laterally rotate arm

Answer 5

Deltoid (spinal part)
Infraspinatus
Ters minor

Question 6

Muscles innervated by musculocutaneous nerve

Answer 6

Biceps brachii (C5, C6)
Brachialis (C5, C6)
Coracobrachialis (C5, C6, C7)
Skin of lateral aspect of forearm

Question 7

What does axillary nerve innervate?

Answer 7

Teres minor
Deltoid 
Glenohumeral joint
Skin of superolateral arm
(Over inferior part of deltoid)

Question 9

Contents of quadrangular space

Answer 9

Axillary nerve

Posterior circumflex humeral artery

Question 10

Contents of cubital fossa

Answer 10

Brachial artery
Biceps tendon
Median nerve
Radial nerve
Median cubital vein
Medial and lateral cutaneous nerve- in subcutaneous tissue overlying cubital fossa

Question 11

Branches of brachial artery

Answer 11

Deep brachial artery
Superior ulnar collateral
Inferior ulnar collateral

Question 12

Quadrangular space

Answer 12

Inferior border of teres minor
Superior border of teres major
Lateral border of long head of triceps brachii
Humerus

Question 13

A branch of the radial nerve

Supplies the skin on the posterior surface of the arm

Answer 13

Posterior cutaneous nerve of the arm (C5-C8)

Question 14

A branch of the radial nerve

Supplies the skin on the posterior surface of the forearm

Answer 14

Posterior cutaneous nerve of forearm (C5-C8)

Question 15

Terminal branch of the axillary nerve
Emerges from the posterior margin of the deltoid
To supply the skin over the lower part of deltoid and on the lateral side of midarm

Answer 15

Superior lateral cutaneous nerve of arm (C5, C6)

Question 16

Branch of Radial nerve
Supplies the skin over the inferolateral aspect of arm
Frequently a branch of the posterior cutaneous nerve of the forearm

Answer 16

Inferior lateral cutaneous nerve of arm (C5, C6)

Question 17

Terminal branch of musculocutaneous nerve

Supplies the skin on the lateral side of the forearm

Answer 17

Lateral cutaneous nerve of forearm (C6, C7)

Question 18

From the medial cord of the brachial plexus
Often uniting in the axilla with the lateral cutaneous branch of the second intercostal nerve
Supplies the skin on the medial side of arm

Answer 18

Medial cutaneous nerve of the arm (C8-T2)

Question 19

From the medial cord of the brachial plexus

Supplies the skin on the anterior and medial surfaces of the forearm

Answer 19

Medial cutaneous nerve of forearm (C8, T1)

Question 20

Muscles that originate from the medial epicondyle

Answer 20

Flexor Carpi Radialis
Palmaris longus
Pronator teres (humeral head)
Flexor digitorum superficialis (humero-ulnar head)

Question 21

Muscles that originate at the lateral epicondyle of humerus

Answer 21

Extensor Carpi Radialis brevis 
Extensor digitorum
Extensor digiti minimi
Extensor Carpi ulnaris
Supinator

Question 22

Bicipitalradial bursa (biceps bursa)

Answer 22

Separates the biceps tendon from the anterior part of radial tuberosity

Question 23

Subtendinous olecranon bursa

Answer 23

Located between the olecranon and the triceps tendon

Just proximal to its attachment to olecranon

Question 24

Subcutaneous olecranon bursa

Answer 24

Located in the subcutaneous connective tissue over the olecranon

Question 25

Muscle that is the primary producer of pronation

Answer 25

Pronator quadratus

Question 26

Cervico-axillary canal

Answer 26

Passageway between the neck and axilla
Bounded by:
1st rub
Clavicle
Superior edge of scapula