Chest
Pectoralis major
Adducts and medially rotates the arm. the clavicular fibers assist shoulder flexion
- Origin
- Medial clavicle, sternum, and costal cartilages of the upper ribs
- Insertion
- Lateral lip of the intertubercular sulcus of the humerus
- Primary actions
- Adducts and medially rotates the arm. the clavicular fibers assist shoulder flexion
Educational anatomy reference only. This page does not diagnose pain, injury, or movement limitations.
From anatomy to action
Explore the movement, not just the muscle.
A single muscle rarely explains a movement by itself. Use the related movement content to see how this anatomy may contribute, then choose a focused program when you want a complete progression.
Corrective movement strategies and exercises
Mobility focus
Rounded Shoulders
Explore shoulder and upper-back positions that make reaching, pushing, and pulling feel easier.
Open corrective movement strategy
Mobility focus
Forward Head Posture
Explore a more comfortable head and neck position without forcing a single “perfect” posture.
Open corrective movement strategyComplete guided progressions
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These programs include this muscle through a related guide or corrective recipe.