한국인태아의 회맹부 및 충수에 관한 해부학적 연구

Abstract

The cecum, ileocecal ostium and appendix of 294 Co161, \' 133) Korean fetuses older than four month of age were studied anatomically. 1) The development of the cecum increased regularly as the fetal age increased, and had no sexual difference. The length and circumference of the cecum of the full term fetus were lis and 1/10 of the adult cecum respectively, so the cecum of the fetus is relatively longer and slender than that of the adult. 2) The diameter of the ileocecal ostium of the ten month fetus was 6.0mm. and liz of that of the adult (12mm). From the beginning of the fetal life the superior lip of the ileocecal ostium developed more rapidly than that of the inferior lip. 3) The appendix showed a regnlar increasing type of development in generally, and had no notable sexual difference. Compared with Japanese fetus there was no racial difference. The length and the diameter of the appendix were 1/2 and liz of that of the adult respectively, so the appendix of the fetus was relatively very large than that of the adult. 4) The type of the cecum was mostly funnel shape (95%) and the origin of the appendix on the lower end of the cecum was frequently observed(50~90%). 5) The positions of the appendix showed mostly inwards (53.7%) and downwards (23.8%) and this result was as same as other ivestigators' results. 6) The types of the appendix were very variable, and the majority were the turned and curved types.