Two Minutes of Anatomy: Pectoralis Major
Автор: Dr Donald A Ozello DC, NSCA-CPT
Загружено: 2020-03-03
Просмотров: 6667
Описание:
Pectoralis Major
Two heads: Clavicular and Sternocostal
Origin: Head of clavicle, anterior sternum, costal cartilages 1-7, sternal end of rib 6 and aponeurosis of external oblique.
Insertion: Anterior proximal humerus.
Concentric Actions: Flexion, adduction and medial rotation of arm at glenohumeral joint.
Clavicular Head: Flexion of extended arm.
Sternocostal Head: Extension of flexed arm.
Innervation:
Clavicular Head - Lateral Pectoral Nerve. (C5-C7).
Sternocostal Head - Medial Pectoral Nerve (C6, C7, C8 & T1).
Dr Donald A Ozello DC of Championship Chiropractic in Las Vegas, NV
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