Axilla (General)

Question 1

General Definition

Answer 1

Space between shoulder and chest wall, continuois with posterior triangle of the neck through the cervicoaxillary canal
Shaped like a truncated pyramid

Question 2

Contents of Axilla

Answer 2

Brachial Plexus
Axillary Vessels
Lymph nodes
Fat

Question 3

Surface anatomy contents?

Answer 3

Ant axi fold
Post axi fold
Ax fossa
Midax line

Question 4

What forms the ant ax fold?

Answer 4

Pec muscles

Question 5

What forms the post ax fold?

Answer 5

Scapula and associated muscles (especially lat dorsi)

Question 6

What does the ax fossa lie between?

Answer 6

Between ant and post folds

Question 7

What is the midax line?

Answer 7

Vertical line on the lateral chest wall midway between the ax folds

Question 8

Boundaries of the Apex of the Ax?

Answer 8

Cervicoaxillary canal, bounded by lateral border of 1st rib, clavicl, and sup border of the scapula

Question 9

Boundaries of the Ant wall?

Answer 9

Muscles of the subclavius, pec minor, and pec major muscles and their related fascias

Question 10

Boundaries of the Medial Wall?

Answer 10

Serratous ant muscle covering the thoracic wall

Question 11

Boundaries of the posterior wall

Answer 11

Top to Bottom: subscapularis, teres major and lat dorsi muscles

Question 12

Boundaries of the lateral wall

Answer 12

Coracobrachialis and biceps brachii muscles

Question 13

Boundaries of the base/floor

Answer 13

Skin and Axillary fascia