Pectoralis Major
Anatomical Info
Muscle Characteristics:
Nerves:
Nerve
System
Spinal Plexus
Division
Trunk
Branch
Roots
Lateral Pectoral
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Spinal
Brachial Plexus
Anterior
Middle
C5 And C6
Medial Pectoral
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Spinal
Brachial Plexus
Middle
C7, C8, And T1
Description
The pectoralis major is a large, fan-shaped muscle located in the chest. It originates on the clavicle, the sternum, and the costal cartilages of the ribs, and inserts on the humerus.

The main function of the pectoralis major is to adduct, flex, and medially rotate the arm at the shoulder joint. It also assists in stabilizing the shoulder joint and helping to maintain posture.

Targeted Muscle Exercises

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Muscle Engaging Sports

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Bmx
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