Mori T, Uchida T A
J Reprod Fertil. 1982 May;65(1):23-8. doi: 10.1530/jrf.0.0650023.
Live spermatozoa were first stored in the colliculus tubaricus of the uterotubal junction (UTJ) on both sides, Spermatozoa then ascended to the caudal isthmus just before ovulation. Spermatozoa with intact acrosomes in the caudal isthmus, which had their heads orientated towards the cephalic isthmus, were seen amongst groups of epithelial cilia in parallel to the epithelium; on the other hand, acrosome-less spermatozoa that were not attached to the epithelium were orientated irregularly in the lumen. A few acrosome-intact spermatozoa were found in the left ampulla at the time of ovulation of the single egg on the left side. Most of the spermatozoa failed to reach or survive in the ampulla of the right oviduct and leucocytic phagocytosis was restricted to this side.
活精子首先储存在双侧子宫输卵管交界处（UTJ）的输卵管壶腹嵴中，然后在排卵前精子上升至峡部尾端。在峡部尾端，可见顶体完整、头部朝向峡部头端的精子，它们位于与上皮平行的上皮纤毛群中；另一方面，未附着于上皮的无顶体精子在管腔内排列不规则。在左侧单个卵子排卵时，在左侧壶腹部发现了少数顶体完整的精子。大多数精子未能到达右侧输卵管壶腹部或在其中存活，白细胞吞噬作用仅限于右侧。
