MSK Spaces of the UL

Question 1

What makes the medial wall of the axilla?

Answer 1

Serratus anterior and the thoracic wall (ribs and intercostal muscles)

Question 2

What makes the lateral wall of the axilla?

Answer 2

Intertubecular groove of the humerus

Question 3

What makes the anterior wall of the axilla?

Answer 3

Pectoralis major and minor

Question 4

What makes the posterior wall of the axilla?

Answer 4

Subscapularis, teres major and latissimus dorsi

Question 5

What makes up the apex of the axilla?

Answer 5

The lateral border of the first rib, the superior border of the scapula and the posterior border of the clavicle

Question 6

What makes up the base of the axilla?

Answer 6

Skin/Fascia

Question 7

What are the contents of the axilla?

Answer 7

Axillary artery and vein, brachial plexus, biceps brachii, coracobrachialis and axillary lymph nodes

Question 8

What contents of the axilla are encased by the axillary sheath?

Answer 8

Axillary artery, Axillary vein and cords and branches of the brachial plexus.

Question 9

What is the anatomical snuff box?

Answer 9

A triangular depression found on the lateral aspect of the dorsum of the hand
Located at the level of the carpal bones

Question 10

What are the contents of the anatomical snuff box?

Answer 10

Radial artery
Branch of radial nerve
Cephalic vein

Question 11

What does thinking about the anatomical snuff box help you to remember?

Answer 11

That part of the sensory supply of the hand is the radial nerve

Question 12

What makes up the medial border of the anatomical snuff box?

Answer 12

Tendon of extensor pollicis longus

Question 13

What makes up the lateral border of the anatomical snuff box?

Answer 13

Tendon of abductor pollicis longus and extensor pollicis brevis

Question 14

What makes up the proximal border of the anatomical snuff box?

Answer 14

Styloid process of the radius

Question 15

What makes up the floor of the anatomical snuff box?

Answer 15

Carpal bones, scaphoid and trapezium

Question 16

What makes up the roof of the anatomical snuff box?

Answer 16

Skin

Question 17

What are the contents of the cubital fossa?

Answer 17

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Radial Nerve
Biceps Tendon
Brachial Artery
Median Nerve

Question 18

What is the lateral border of the cubital fossa?

Answer 18

Medial border of brachioradialis

Question 19

What is the medial border of the cubital fossa?

Answer 19

Lateral border of pronator teres

Question 20

What is the superior border of the cubital fossa?

Answer 20

An imaginary line between the epicondyles of the humerus

Question 21

What is the floor of the cubital fossa?

Answer 21

Proximally- brachialis

Distally-supinator

Question 22

What is the roof of the cubital fossa?

Answer 22

Skin and fascia reinforced by the bicipital aponeurosis

Question 23

What are the layers of the carpal tunnel?

Answer 23

Deep carpal arch formed by the scaphoid and trapezium and the pisiform and hamate
Superficial layer: flexor retinaculum

Question 24

What are the contents of the carpal tunnel?

Answer 24

9 tendons and 1 nerve
Flexor pollicis longus tendon
4 tendons from flexor digitorum superficialis
4 tendons from flexor digitorum profundus

Median nerve