Its parallel - oriented fibers run superior and anterior, inserting on the lower ribs and the internal
oblique aponeurosis, forming a flat muscle architecture.
The sternal - costal head of the pectoralis muscle originates at the lateral manubrium, the six sternum costal cartilages and the eternal
oblique aponeurosis and it inserts at the humerus.
Not exact matches
The clavicular head (upper pec) starts of the medial half of the clavicle, and the sternal head (middle and lower pec) starts on the anterior surface of the clavicle, costal cartilage of the first 6 ribs, and the
aponeurosis of the external
oblique muscle.
In terms of the individual regions, the sternocostal head originates on the (1) anterior surface of the sternum, (2) the superior six costal cartilages, and (3)
aponeurosis of the external
oblique muscle, and then inserts on the bicipital groove.