Origin: Spinous processes of first through fifth thoracic vertebrae.
Insertion: Medial margin of acromion and superior border of spine of scapula.
Action: Adduction and slight elevation of the scapula.
Position: Supine abduct the arm 90° at the shoulder.
Rotation: Externally rotate the arm so the palm is facing toward the head
Stabilise: Support front of same shoulder.
Monitor: Apply pressure to the forearm directly anterior.
Nerve Supply: Spinal portion of accessory nerve XI and ventral ramus - C2, C3, C4
Sympathetic: L1, L2, L3
Parasympathetic: Vagus X, S2
Anterior: Bilateral anterolateral from hip to knee
Posterior: Bilateral region between L1, L4 &PSIS.
Neuro-Vascular Reflex: Bilateral parietal eminences-posterior aspect.
Yuan point: LI4
Nutrition: Bifidobacterium bifidum, Lactobacillus acidophilus, Vit. D, iron.