Pectoral Major muscle

From WikiLectures


Beginning: the medial part of the clavicle, the sternum and the first six ribs.

Attachment: crista tuberculi majoris humeri.

Innervation: nn. pectorales laterales (C5–C7); mediales (C8,Th1) – pars supraclavicularis plexus brachialis.

Function: clavicular part - auxiliary function during forearm pronation.

Sternocostal and abdominal part - adduction, internal rotation.
Accessory inspiratory muscle.


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References[edit | edit source]

  • ČÍHÁK, Radomír. Anatomy 1. 2. edition. Grada, 2001. 497 pp. pp. 344 - 345. ISBN 80-7169-970-5.