PMID: 9176663May 1, 1997Paper

Fine structure of the choroidal coat of the avian eye. Vascularization, supporting tissue and innervation

Anatomy and Embryology
M E De Stefano, E Mugnaini

Abstract

To clarify further the functional anatomy of the avian choroid, including its innervation, 12 adult White-Leghorn chickens were studied by standard electron microscopy and immunoelectron microscopy with somatostatin antibody. The endothelial cells of the blood vessels in the choriocapillaris have fenestrations only facing the retina, while the nuclei are situated toward the sclera. In addition to tight junctions and zonulae adherentes, adjoining endothelial cells form gap junctions and dense plaques with attached filaments resembling those of smooth muscle cells. The fine structure of arteries and veins is similar to that of the vasculature described in other organs. The supporting tissue is organized in trabeculae, i.e., bridges of cellular and fibrous elements that surround and sustain blood and lymphatic vessels. This tissue consists primarily of a system of fusiform or star-shaped smooth muscle cells, connected to each other and to those in the vessels' walls through macular junctions of the adherent type, less prominent than desmosomes, and perhaps also punctiform gap junctions. Occasionally, trabecular smooth muscle cells approach the lymphatic vessels, which lack a muscular tunica, and abut their endothelium with spinous...Continue Reading

Citations

Jan 13, 2018·Journal of Avian Medicine and Surgery·Karin WertherRüdiger Korbel
May 18, 2018·Vestnik oftalmologii·Yu I BorodinV V Chernykh
Dec 18, 2013·Cell and Tissue Research·Falk SchrödlHerbert A Reitsamer
Jul 8, 2020·Survey of Ophthalmology·Efthymia ProusaliAsimina Mataftsi
Jul 23, 2021·Progress in Retinal and Eye Research·Raphael LejoyeuxJay Chhablani
Jul 21, 2021·Investigative Ophthalmology & Visual Science·Zhina ZhiXiangtian Zhou
Oct 13, 2009·Autonomic Neuroscience : Basic & Clinical·K N Cane, C R Anderson

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