在解剖一具男性童尸时,发现双侧二腹肌变异,现报道如下:在正常二腹肌内侧出现副二腹肌变异,左侧前腹长2.6cm,宽0.6cm,左侧后腹长2.3cm,宽0.5cm;右侧前腹长3.1cm,宽0.7cm,右侧后腹长2.4cm,宽0.7cm.两侧肌束与中线交叉后止于正常二腹肌中间腱.该副二腹肌的神经来源为下颌舌骨神经.以其纤维方向及附着点,可以认为此肌的作用大致与二腹肌相同,并尚有紧张下颌舌骨缝固定口隔的作用. In the dissection of a male child’s body, found that the two-sided abdominal muscle variation, are reported as follows: In the normal abdominal muscles appeared inside the side of the abdominal muscle variation, left anterior abdominal length 2.6cm, width 0.6cm, left posterior abdominal Length 2.3cm, width 0.5cm; the right anterior abdominal length 3.1cm, width 0.7cm, the right posterior abdominal length 2.4cm, width 0.7cm. The nerve source of the paraspinal muscle is the hypothalamic nerve, which can be considered as the same as the biceps muscle with its fiber orientation and attachment point.