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Right pectoralis major muscle dissected between the manubrial (m) and sternocostal (SC) parts of the muscle. Sternocostal, costal (CO) and abdominal (a) parts are supplied through dominant (DB) and three motor nerves (N3, N4, N5). The clavicular (c) and manubrial parts are supplied through the superior branch (SB) of the thoracoacromial artery
