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What is the pectoralis major muscle?

Stuart A. Linder, MD
Plastic Surgery
The pectoralis major muscle is the thick, fan-shaped muscle situated at the upper front (anterior) of the chest wall which makes up the bulk of the chest muscles in the male and which lies under the breast in the female.
The Beverly Hills Shape: The Truth About Plastic Surgery

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The Beverly Hills Shape: The Truth About Plastic Surgery

Dr. Stuart Linder, Diplomate of the American Board of Plastic Surgery, specializes in body sculpting procedures in the heart of Beverly Hills, California. Dr. Linder has trained in both general...
Rick Olderman
Physical Therapy
The pectoralis major muscle originates along the clavicle, down the sternum, and across the ribs and inserts into the humerus. This muscle can contribute to excessive internal rotation of the arm or scapular abduction.
Fixing You: Shoulder & Elbow Pain: Self-treatment for rotator cuff strain, shoulder impingement, tennis elbow, golfer's elbow, and other diagnoses.

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Fixing You: Shoulder & Elbow Pain: Self-treatment for rotator cuff strain, shoulder impingement, tennis elbow, golfer's elbow, and other diagnoses.

The shoulders are a floating system on the trunk, held in place and moved by muscular control. The foundation of shoulder movement is the shoulder blade which has precise resting and moving...
Located in front of the top of the rib cage, the pectoralis major muscle runs from the clavicle and sternum to the top of the arm (humerus). It contracts and brings the arms to the midpoint of the body and internally rotates the arm.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.