AXILLA

This is an old revision of the document!

axilla
- boundaries
  - apex/cervicoaxillary canal
    - directed upwards and medially towards root of neck
    - truncated and corresponds to a triangular interval
      - anteriorly by posterior surface of clavicle
      - posteriorly by
        
        superior border of of scapula
        
        medial aspect of coracoid process
      - medially
        
        outer border of 1st rib
    - this oblique passage is called as
      - cervico axillary canal
  - base or floor
    - directed downwards
    - formed by
      - skin , superficial and axillary fascia
    - convex upwards
      - with concavity of axilla
  - walls
    - anterior wall
      - pectoralis major infront
      - clavipectoral fascia
      - pectoralis minor
    - posterior wall
      - subscapularis
      - teres major
      - latissimus dorsi below
    - medial wall
      - upper 4 ribs and their intercostal muscles
      - upper part of serratus anterior muscle
    - lateral wall
      - upper part of shaft of humerus
        
        in region of bicipital groove
      - coracobrachialis
      - short head of biceps
- layout
  - axillary artery and brachial plexis
    - run from apex to base
- introduction
  - base
    - four walls
      - anterior wall
      - posterior wall
      - medial wall
      - lateral wall
- contents
  - axillary artery and its branches
  - axillary vein and its tributaries
  - infraclavicular part of brachial plexus
  - five groups of axillary lymph nodes
  - long thoracic and intercostobranchial nerves
  - axillary fat and areolar tissue