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Pectoralis major muscle

Diagram of the human Pectoralis major muscle

The pectoralis major is a large, fan-shaped muscle and covers much of the front upper chest, starting at the breastbone (or sternum) including the second to the sixth ribs. This muscle moves the arm across the body.

Glossary

Rights: National Aeronautics and Space Administration (NASA)
Published: 21 June 2007Size: 19.08 KB
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