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PECTORAL REGION
- Skin ( त्वचा )
- Superficial fascia ( ऊपरी प्रवरण )
  - Contents ( अंतर्वस्तु )
    - BREAST (स्थन )
    - Cutaneous nerves
      - derived from cervical plexus
        
        supraclavicular nerves
        
        medial , lateral and intermediate
        
        supply the skin over upper half of deltoid
        
        from clavicle to second rib
      - intercostal nerves ( अंतरापर्शुका )
        
        anterior and lateral cutaneous branches
        
        supply skin below level of second rib
        
        intercostobranchial nerve of T2 supplies
        
        skin of floor of axilla
        
        upper half of medial side of arm
    - cutaneous vessels ( त्वचा वाहिका )
      - perforating branches of internal thoracic artery
      - lateral cutaneous nerves are accompanied
        
        lateral cutaneous branches of posterior intercostal arteries
    - platysma
      - supplied by a branch of facial nerve
- Above pectoralis major muscle
  - Deep pectoral fascia
    - covers pectoralis major muscle
- Below pectoralis major muscle
  - Clavipectoral fascia
  - extent
    - clavicle to axillary fascia below
    - upper part splits ( ऊपर का भाग )
      - to enclose subclavius muscle
    - posterior lamina
      - fused to investing layer of deep cervical fascia
    - inferiorly splits to enclose pectoralis minor muscle
  - pierced by
    - lateral pectoral nerve ( पार्श्व वक्षच्छद तंत्रिका )
    - cephalic vein
    - thoracoacromial artery
    - lymphatics passing from breast and pectoral region to apical group of axillary lymph nodes

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