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Organs » Pectoralis Major
 

Pectoralis Major

Descriptions of Pectoralis Major

Pectoralis Major: a skeletal muscle that adducts and rotates the arm
Source: WordNet 2.1

Summary Information: Pectoralis Major

Pectoralis Major: The pectoralis major is a paired muscle found in the upper anterior chest area that helps to give shape to the breasts. The pectoralis major originates from the clavicle, sternum and the external oblique muscles and inserts on the humerus. The pectoralis major includes upper, middle, and lower fibers. As a whole, the pectoralis major adducts, medially rotates the humerus. Individual groups of fibers also flex and extend the humerus. These motions are needed for such activities as doing push-ups, arm wrestling, and lifting a toddler. The pectoralis major is innervated by the lateral pectoral nerve and the medial pectoral nerve.

Conditions that can afflict the pectoralis major include rupture of the pectoralis major tendon, myalga, repetitive strain injury, tears, strains, myopathy, atrophy, infectious myositis, neuromuscular diseases, lacerations and contusions.

Closely Related Organs: Pectoralis Major

The following organs are closely related to the organ: Pectoralis Major:

Conditions Afflicting Organs: Pectoralis Major

The following conditions are related to the organ: Pectoralis Major:

Other Names: Pectoralis Major

The following are other names for the organ: Pectoralis Major:

Sub Parts: Pectoralis Major

The following list contains sub-parts of the organ: Pectoralis Major:

Symptoms Related to Afflictions of: Pectoralis Major

These symptoms are related to afflictions of the organ: Pectoralis Major:

Condition count: 0

Organs: list of all organs

Pectoralis Major: Related Topics

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