RETINAL EPITHELIAL FINE-STRUCTURE IN THE DOMESTIC CAT (FELIS-CATUS)

被引：11

作者：

BRAEKEVELT, CR

机构：

[1] Department of Anatomy, The University of Manitoba, Winnipeg, Manitoba, R3E OW3

来源：

ANATOMIA HISTOLOGIA EMBRYOLOGIA-JOURNAL OF VETERINARY MEDICINE SERIES C-ZENTRALBLATT FUR VETERINARMEDIZIN REIHE C | 1990年 / 19卷 / 01期

关键词：

D O I：

10.1111/j.1439-0264.1990.tb00878.x

中图分类号：

R602 [外科病理学、解剖学]; R32 [人体形态学];

学科分类号：

100101 ;

摘要：

The morphology of the retinal epithelium (RPE) and closely associated choriocapillaris and Bruch's membrane (complexus basalis) has been investigated in the eye of the domestic cat (felis catus) by light and electron microscopy. The RPE consists of a single layer of cuboidal cells joined laterally by apically‐locateda junctional complexes. Basally (sclerally) these cells display numerous infoldings while apically (viterally) two distinct types of processes enclose photoreceptor outer segments. Internally the large vesicular nucleus is centrally located. Smooth endoplasmic reticulum, mitochondria, polysomes and lysosome‐like bodies are abundant. Rough endoplasmic reticulum while present is not plentiful. Over the tapetum lucidum, melanosomes are absent from the RPE cells while in nontapetal locations melanosomes are large and plentiful. The endothelium of the choriocapillaris is highly fenestrated and these capillaries are deeply indented into the epithelial layer over the tapetum. Bruch's membrane (complexus basalis) is non‐tapetal regions in the typical pentalaminae structure noted for most mammals. Over the tapetum however it is reduced to a trilaminate structure and when associated with the indented capillary profiles is further reduced to a single thickened basal lamina. Copyright © 1990, Wiley Blackwell. All rights reserved

引用

页码：58 / 66

页数：9

共 32 条

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