制作一男性左侧下肢标本时,见其阴部内动脉高位发出伴分支异常,脐动脉分支异常(图1)。查阅资料未见报道,为积累国人解剖学数值资料,现报道如下:阴部内动脉在距髂内动脉起点4.67 cm处发出,外径为2.54mm。其行向内下,跨过闭孔动脉后沿臀下静脉左前方走行,在第2、3骶神经后方穿出梨状肌下孔,距其起点1.90 cm处发出外径为1.94 mm的变异支。变异支与阴部内动脉呈16.3°斜向内下,跨 When making a left lower extremity specimen of a man, he sees an abnormal branch with an abnormally high intra-genital artery, and an abnormal umbilical artery branch (Figure 1). Access to information has not been reported, in order to accumulate numerical data of the anatomy of our country, are reported as follows: internal genital artery in the beginning of the internal iliac artery 4.67 cm at the issue, the outer diameter of 2.54mm. The line to the inside, after crossing the obturator artery along the inferior gluteal vein in front of walking in the second and third sacral nerve piercing piriformis hole from its starting point of 1.90 cm issued a diameter of 1.94 mm of variation support. Variant branch and internal genital artery was 16.3 ° diagonally downward, cross