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axillary nerve, musculocutaneous nerve, median nerve, ulnar nerve, radial nerve
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Pectoralis Major: Action, Innervation, Parts
- Action: Adduction, medial rotation of arm
- Innervation: medial, lateral pectoral nerves
- Parts: Clavicular head, sternocostal head
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Deltopectoralgroove and triangle: Innvervation
cephalic vein, thoraco-acromial artery, lateral pectoral nerve
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Pectoralis Minor
- Action: stabilize scapula
- Innervation: medial pectoral nerve penetrates anteriorly
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Subclavius
- Action: stabilize clavicle, resist dislocation
- Innvervation: Nerve to subclavius
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Serratus Anterior
- Action: upward rotate scapula
- Innervation: long thoracic nerve, lateral thoracic artery
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Pectoral Region Blood Supply
- Axillary Artery
- 1) Superior Thoracic Artery
- 2) Thoraco-Acromial Artery
- 3) Pectoral Branch
- 4) Clavicular Branch
- 5) Lateral Thoracic Artery
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Pectoral region venous drainage
Axillary (where cephalic, basilic, and brachail come in) and Subclavian veins
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Sternum
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Lymphatic Pectoral Drainage, Axillary
- Pectoral
- Subscapular
- Humeral
- Central
- Apical
- Supraclavicular
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General Lymphatic Pectoral Drainage
- Superficial: Follow superficial veins
- -Basilic > cubital and humeral axillary nodes
- -Cephalic > apical axillary nodes
- Deep: follow deep veins
- - to humeral axillary nodes
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