Origin: Anterior superior 1/3 of the surface of sternum and medial 1/2 of clavicle.
Insertion: Crest of the greater tubercle of the Humerus.
Action: Adducts, flexes the arm at the shoulder and medially rotates the Humerus
Position: With elbow held straight flex the arm 90° to point directly forward and slightly to the midline.
Rotation: Medially rotate Humerus.
Stabilise: Anterior opposite shoulder.
Monitor: Apply pressure at the forearm above the wrist to abduct the arm at a 10°angle toward the feet.
Nerve Supply: Lateral and medial pectoral - C5- C7
Sympathetic: T2, T3, T4
Parasympathetic: Vagus X
Anterior: Bilateral between 3rd & 4th, 4th & 5th and 5th & 6th ribs next to sternum.
Posterior: Bilateral 2cm lateral to midline adjacent to T3, T4 & T5.
Neuro-Vascular Reflex: Bregma.
Yuan Point: Lu9
Nutrition: Vit. C.