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The Anatomy of the Chest Muscles - Pectoralis Major, Pectoralis Minor


 

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Anatomy of the Chest Muscles

Home -> Muscular Anatomy -> Chest Anatomy


Anatomy of the Muscles of the Chest Anatomy of the Muscles of the Chest
Anatomy Chart courtesy of FCIT

The Pectoralis Major muscles (also known as the Pecs) are located on the front of the rib cage.

The Pecs attach to the humerus near the shoulder joint and originate on the breastbone in the center of the chest.

The fibers of the Pectoralis muscles run like a fan across the chest. The fan-like structure of the Pecs allows the humerus to move in a variety of planes across the body.

The Pectoralis Minor muscle (not shown in the diagram) is located underneath the pectoralis major muscle, attaching to the coracoid process of the scapula and originating on the middle ribs.




Functions

The function of the Pectoralis Major is to bring the humerus across the chest. A flye movement is the best example of this action.

The Pectoralis Minor serves to move the shoulder area forward. This can be seen by shrugging your shoulder forward.




Exercises

Exercises that work the Pectoralis muscles include:

  • Cable crossovers
  • Pec deck machine
  • Push-ups
  • Dips


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