Axilla

Question 1

What is the axilla?

Answer 1

Space inferior to the GH joint and superior to Axillary fascia at jusctiom of arm and thorax which serves as passageway or distribution center for neurovascular structures, usually protected by ADDUCTED upper limb

Question 2

Neurovasvular structures then pass out of axilla:
Superiorly
Anteriorly
Inferiorly and laterally
Posteriorly
Inferiorly and medially

Answer 2

Cervico-Axillary canal
Clavipectoral triangle
Into limb itself
Quadrangular space
Along thoracic wall into inferiorly places axio-appendicular muscles (serratus a. And latissimus Dorsi)

Question 3

When are contents of axilla vulnerable?

Answer 3

When arm is fully abducted

Question 4

Boundaries of axilla

Answer 4

Apex- cervico-axillary canal

Base-concave skin, subcutaneous tissue, Axillary fascia, Axillary fossa

Anterior wall-p major, p minor, pectoral and clavipectoral fascia
Anterior Axillary fold

Posterior wall- Sup. by scapular and subscapularis.
Inf. by teres major and latissimus dorsi
Posterior Axillary fold

Medial wall-thoracic wall; 1st to 4th IC muscles, serratus a.

Lateral wall- INTERTUBERCULAR SULCUS of humerus.

Question 5

Boundaries of base of axilla

Answer 5

Anterior Axillary fold
Posterior Axillary fold
Thoracic wall
Medial aspect of ARM

Question 6

Inferior most part of anterior and posterior wall of axilla

Answer 6

Anterior and poster Axillary fold

Question 7

Contents of axilla

Answer 7

Axillary artery
Axillary vein
Axillary lymph nodes
Lymphatic vessels
CORDS and branches of brachial plexus
All embedded in
Axillary fat

Question 8

Neurovascular structures are enclosed in - which is an extension of

Answer 8

Axillary sheath as and extension of cervical fascia