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笔者在一具男尸(约65岁)的解剖中,发现左侧胸大肌和背阔肌同时有变异肌束出现,为积累国人解剖形态学资料,现从胸大肌与背阔肌额外肌束的起止、走行、形态、血供以及神经支配等方面予以报道。1.胸前壁变异肌束位于左侧胸大肌下缘,呈扁条状,斜向外上走行,大体分三段(图1):起始部以三角形腱膜附于剑突下腹直肌前鞘,腱膜起始部宽4.85 cm,长6.9 cm,移行至肌腹部宽1.2 cm;中段为肌腹部分,行于胸大肌下缘,与胸大肌下
In an autopsy of a male corpse (about 65 years old), the author found that the left pectoralis major and latissimus dorsi have mutated muscle bundles. In order to accumulate the data of Chinese anatomical morphology, Muscle bundle of starting and ending, walking, morphology, blood supply and innervation and other aspects to be reported. 1. Chest wall variation muscle bundle is located in the left lower edge of the pectoralis major muscle, was flat, oblique walk on the outside, generally divided into three sections (Figure 1): The initial Department of triangular aponeurosis attached to the lower xiphoid Anterior muscle sheath, aponeurosis at the beginning of 4.85 cm wide and 6.9 cm long, migrate to the muscle abdomen wide 1.2 cm; the middle part of the abdominal muscles, line in the lower edge of the pectoralis major, and the pectoralis major