The position of the human caecum in fetal life.
The position of the human caecum in fetal life.
复制标题
人类盲肠在胎儿生命中的位置。
作者：
M. Fitzgerald;J. P. Nolan;M. O'NEILL
所谓的“盲肠下降”在胚胎学（Hamilton，Boyd & Mossman，1964；Langman，1969）和解剖学（Cunningham，1964；Ellis，1966；Grant & Basmajian，1965；Gray，1967；Hollinshead，1967；Last，1966；Last，1966）教科书中有所描述。莫里斯，1966）。从脐带返回后，盲肠被认为占据腹部右上象限的位置，并在胎儿后期下降到右髂窝。盲肠的迁移被认为与结肠上升部分的发育有关。这一描述似乎基于 Dott (1923) 对肠道旋转的描述，而该描述又基于早期文献，特别是 Cleland (1868) 的著作。另一方面，Arey (1965) 的描述遵循 Hunter (1928) 的描述，后者在一系列胎儿（未给出数量）中观察到回盲部交界处从未高于髂嵴水平超过 5 毫米。 Frazer & Robbins (1916) 此前曾评论过胎儿盲肠相对于髂嵴的位置恒定。
The so-called 'descent of the caecum' is described in current textbooks of embryology (Hamilton, Boyd & Mossman, 1964; Langman, 1969) and anatomy (Cunningham, 1964; Ellis, 1966; Grant & Basmajian, 1965; Gray, 1967; Hollinshead, 1967; Last, 1966; Morris, 1966). Following its return from the umbilical cord, the caecum is considered to take up a position in the right upper quadrant of the abdomen, and to descend to the right iliac fossa during later fetal life. The migration of the caecum is thought to be related to the development of the ascending part of the colon. This description appears to be based on Dott's (1923) account of intestinal rotation, which was based in turn on the earlier literature, especially on the writing of Cleland (1868). Arey's (1965) description, on the other hand, follows that of Hunter (1928), who observed in a series of fetuses (number not given) that the ileocaecal junction was never more than 5 mm above the level of the iliac crest. Frazer & Robbins (1916) had previously remarked on a constancy in the position of the fetal caecum relative to the iliac crest.