Axilla (arm pit)

2. Axilla (arm pit) • Between upper arm and thoracic wall • Boundaries: • -Apex • -Base • -Anterior wall • -Posterior wall • -Medial wall • -Lateral wall

3. Apex: (cervico-axial canal • Directed towards the root of the neck • Bondaries: • Front: clavicle • Behind: upper border of scapula • Medially: outer margin of 1st rib • Transmits axillary vessels and brachial • plexus

4. Anterior wall: -pectoralis major -pectoralis minor -subclavius -clavipectoral fascia

5. Anterior wall

6. Posterior wall: -subscapularis -teres major -latissmus dorsi

7. Posterior wall

9. Medial wall: -upper 3 or 4 intercostal spaces -upper part of serratus anterior -long thoracic nerve -intercosto brachial nerve pierces the medial wall

10. Medial wall

11. Lateral wall: -bicipital groove -coraco brachialis -biceps brachii

12. lateral wall

13. Base: -skin -superficial fascia -axillary fascia (deep fascia)

14. Axillary folds: Anterior axillary fold: Pectoralis major Posterior axillary fold: Latissimus dorsi Teres major

15. Contents: -axillary vessels- -cords and branches of brachial plexus -axillary lymph nodes -fat

16. Axillary artery: • Continuation of subcalvian artery • Extent: outer border of first rib to lower magin of teres major muscle,where it continues as a brachial artery • Divided into 3 parts by pectoralis minor • 1st part: proximal to the muscle • 2nd part: behind the muscle • 3rd part: distal to the muscle

19. CLINICAL ANATOMY

20. Thank you