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sternocostal head of pectoralis major (muscle)


Definition: portion of pectoralis major (muscle) originating from the sternum and ribs; acting alone the ternocostal part extends the arm at the shoulder joint; acting with the clavicular head it adducts the arm.

See: pectoralis major (muscle)

Synonym(s): pars sternocostalis musculi pectoralis majorisTA, sternocostal part of pectoralis major muscle

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.