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Muscles (Continued)

Thorax Lateral Aspect

Serrated Anterior:
Resembles a knife or feathers
Location: rib cage to lateral border
Motion: Scapula Protraction maintains scapulae flat on thorax

Thorax Anterior Aspect
Pectoralis Major
Location: sternum and clavicle across chest and inserts at proximal end of humerous
Motion: shoulder horizontal aDDuction

Arm Muscles

Biceps(Brachii)
Location:Anterior aspect of upper arm
Long Head-runs in bicepital groove
Short Head- More medial attaches on Carcoid process
Motions:Shoulder Flexion

Triceps
Location:Posterior aspect of upper arm
Motion: Shoulder Extension

Deltoid

3 Components provide round contour of shoulder

Anterior-Motion:Flexion
Middle-Motion:Abduction
Posterior-Motion:Extension

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Shoulder Anatomy

By Destiny