Lorenzana M G, López-Wilchis R, Gómez C S, Aranzabal M C U
Departamento Biología de la Reproducción, Universidad Autónoma Metropolitana-Iztapalapa, 09340 México.
Anat Histol Embryol. 2007 Jun;36(3):230-40. doi: 10.1111/j.1439-0264.2006.00752.x.
The macroscopic and microscopic anatomy of the epididymis of the sexually mature Peromyscus winkelmanni (carleton) was examined using light and scanning electron microscopy. The epididymis was divided into three regions: caput, corpus and cauda. The epididymal duct was lined with columnar and cubic epithelium with stereocilia and covered by a muscular connective tissue sheath. Capillaries appear to penetrate directly into the epithelium from the underlying connective tissue in the initial segment. The epididymal epithelium presents four cell types: principal, basal, apical and clear cells. Based on morphological differences (height of epithelial cells, length of the stereocilia, luminal area, larger diameter and spermatic index), the epididymis of P. winkelmanni, presents seven zones. The stereocilia of the epididymal ducts of zones I, II, IV and V are thick and tall, while in zone III they are thin and short. The stereocilia in zone VI are thin, while in zone VII they are short but thick. The secretory products observed in the lumen of the epididymal ducts have vesicular, granular and fibrous form in the seven zones. This study contributes to an understanding of the morphofunctional features of the epididymis in sperm maturation in a species that shows seasonal reproductive activity.
利用光学显微镜和扫描电子显微镜对性成熟的温氏鹿鼠（卡尔顿）附睾的大体和微观解剖结构进行了研究。附睾分为三个区域：头部、体部和尾部。附睾管内衬有带静纤毛的柱状和立方上皮，并被一层肌肉结缔组织鞘覆盖。在起始段，毛细血管似乎从下方的结缔组织直接穿透进入上皮。附睾上皮呈现四种细胞类型：主细胞、基底细胞、顶端细胞和透明细胞。基于形态学差异（上皮细胞高度、静纤毛长度、管腔面积、较大直径和精子指数），温氏鹿鼠的附睾呈现七个区域。I区、II区、IV区和V区附睾管的静纤毛粗且高，而III区的静纤毛细且短。VI区的静纤毛细，而VII区的静纤毛短但粗。在附睾管腔中观察到的分泌产物在七个区域呈现出泡状、颗粒状和纤维状形态。这项研究有助于了解在具有季节性繁殖活动的物种中，附睾在精子成熟过程中的形态功能特征。
