1.1.1. The Axilla

Question 1

What is the Axilla?

Answer 1

The pyramidal space below the shoulder joint

Question 2

What does the Axilla provide?

Answer 2

A passageway for vessels and nerves going to / from the upper limb

Question 3

What shape (roughly) is the Axilla?

Answer 3

Pyramidal:
1 x Apex
1 x Base
4 x Walls

Question 4

What forms the Anterior Wall of the Axilla?

Answer 4

1. Pectoralis Major
2. Pectoralis Minor
3. Subclavius Muscles

Question 5

What forms the Posterior Wall of the Axilla?

Answer 5

1. Subscapularis Muscle
2. Teres Major
3. Latissimus Dorsi

Question 6

What forms the Medial Wall of the Axilla?

Answer 6

1. Serratus Anterior

2. Thoracic Wall

Question 7

What forms the Lateral Wall of the Axilla?

Answer 7

1. Intertubercular Groove of the Humerus

Question 8

What structures are found in the Axilla?

Answer 8

1. Axillary Artery (+ branches) and Vein (+ tribuaries)
2. Brachial Plexus
3. Axillary Lymph Nodes and Vessels
4. Biceps Brachi
5. Coracobrachialis

Question 9

The Axillary Artery is a continuation of which Artery?

Answer 9

The Subclavian Artery

Question 10

At what anatomical point does the Axillary Artery begin?

Answer 10

Lateral Border of the 1st Rib

Question 11

The Axillary Artery continues beyond the Axilla as which Vessel?

Answer 11

The Brachial Artery

Question 12

At what anatomical point does the Brachial Artery begin?

Answer 12

Inferior Border of Teres Major