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Axilla
The document provides an overview of the anatomy of the axilla region. It discusses the boundaries and walls of the axilla, including the anterior, medial, posterior and lateral walls. It describes the main neurovascular structures in the axilla, including the axillary artery and its branches, the axillary vein and its tributaries, and the axillary lymph nodes. It also discusses the contents of the axilla, noting the axillary vessels, brachial plexus, and axillary lymph nodes are surrounded by the axillary sheath.
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Axilla
- 1. UL: Axilla Lecture 2 MarynaKornieieva, PhD, MD Asst. of Clinical Anatomy
- 2. Learning objectives: 1. Externaland internal boundaries of axilla 2. Anterior wall of axilla 3. Medial wall of axilla 4. Posterior wall of axilla 5. Lateral wall of axilla 6. Axillary artery and anastomoses around scapula 7. Axillary vein and its tributaries 8. Axillary lymph nodes, drainage of the breast
- 3. Location and Boundariesof Axilla Anterior axillary fold Posterior axillary fold Chest wall 1st rib Clavicle Scapula Cervico- axillary canalApex Base
- 4. Anterior Wall ofAxilla Pectoralis major Pectoralis minor
- 5. Medial and LateralWalls of Axilla Thoracic wall and serratus anterior Intertubercular groove of the humerus 1st 2nd 3rd 4th M L
- 6. Posterior Wall ofAxilla Subscapularis Teres major Latissimus dorsi Long head of triceps Quadrangular space Triangular space Triangular interval
- 7. Neurovascular Tracts ofShoulder
- 8. Contents of Axilla Axillaryartery Axillary vein Axillary lymph nodes Brachial plexus The axillary sheath is a connective tissue structure that surrounds the axillary vessels and brachial plexus.
- 9. Axillary Artery 1st rib Pectoralis minor Teresmajor Brachial a. Subclavian a. I II III
- 10. Branches of the1st segment of AA Superior Thoracic Artery Supplies: • subclavius, • muscles in the 1st and 2nd intercostal spaces, • superior slips of serratus anterior, • pectoral muscles
- 11. Branches of the2nd segment of AA Thoraco-acromial artery Lateral Thoracic artery S: pectoralis mm, serratus anterior, and intercostal muscles, the axillary lymph nodes, and the lateral aspect of the breast. Acromial Deltoid Pectoral Clavicular
- 12. Branches of the3rd segment of AA Circumflex humeral arteries: anterior and posterior A P Supply: Deltoid Teres M&M Long head of triceps HG joint
- 13. Branches of the3rd segment of AA Subscapular artery 1) circumflex scapular 2) thoracodorsal Circumflex scapula artery anastomosis with the suprascapular artery around the neck of the scapula. Thoracodorsal artery anastomoses with the dorsal scapular artery along the medial border of the scapula. branches 1 2 S: Latissimus Dorsi S: Supra/infraspinatus
- 14.
- 15. Axillary Vein Cephalic v. Basilicv. Axillary v. Subclavian v. Basilic v. Cephalic v. Deep Brachial vv. Ant/post circumflex humerus vv. Subscapular v. Lateral thoracic v.
- 16.
- 17. Enlargement of AxillaryLymph Nodes Sentinel Lymph Node Biopsy Excision and pathologic analysis of axillary lymph nodes are necessary for staging and management of the breast cancer. Level I Level II Level III Level IV UM LM UL LL
- 18. Summary Clavipectoral triangle Ant. comp. of thearm Post. comp. of the arm Cervico-axillary canal Triangular interval Scapular region Pectoral region Quadrangular/ triangular space Neck Axillary artery Axillary vein Axillary lymph nodes
- 19. Thank you foryour attention!!!