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Titolo:
Microvasculature of the rat eye: scanning electron microscopy of vascular corrosion casts
Autore:
Ninomiya, H; Kuno, H;
Indirizzi:
Azabu Univ, Dept Lab Anim Sci, Sagamihara, Kanagawa 2298501, Japan Azabu Univ Sagamihara Kanagawa Japan 2298501 ara, Kanagawa 2298501, Japan Banyu Pharmaceut Co Ltd, Safety Assessment, Saito 3600214, Japan Banyu Pharmaceut Co Ltd Saito Japan 3600214 ssment, Saito 3600214, Japan
Titolo Testata:
VETERINARY OPHTHALMOLOGY
fascicolo: 1, volume: 4, anno: 2001,
pagine: 55 - 59
SICI:
1463-5216(200103)4:1<55:MOTRES>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
WISTAR-KYOTO RATS; OPTIC-NERVE; RETINA;
Keywords:
corrosion cast; microvasculature; rat eye;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
16
Recensione:
Indirizzi per estratti:
Indirizzo: Ninomiya, H Azabu Univ, Dept Lab Anim Sci, 1-17-71 Fuchinobe, Sagamihara, Kanagawa 2298501, Japan Azabu Univ 1-17-71 Fuchinobe Sagamihara Kanagawa Japan 2298501
Citazione:
H. Ninomiya e H. Kuno, "Microvasculature of the rat eye: scanning electron microscopy of vascular corrosion casts", VET OPHTHAL, 4(1), 2001, pp. 55-59

Abstract

Methylmethacrylate castings of the eye microvasculature were prepared from10 Spargue-Dawley rats and studied by electron microscopy. The choroidal arterioles are larger in diameter than retinal arterioles, and have a shorter course to choroidal capillaries than retinal arterioles to retinal capillaries. Retinal capillaries are extremely thin in diameter and form a sparseretinal capillary network. The choriocapillaris is large and sinusoid-like, forming a compactly arranged network in the choroid. These differences inthe microvasculature between the choroid and retina help explain the differences in ocular hemodynamics; that is, the blood flow in the choroid is faster than that in the retina. Capillaries of the iris show a zigzag configuration, which may be an accommodation for dilation and constriction of the pupil. Capillaries of the ciliary body are of large diameter forming leaf-like configurations, presumably to contribute to the secretion of the aqueous humor. Capillaries of the conjunctiva exhibit a somewhat coiled configuration, the arrangement of which reduce tension of the conjunctiva vessels caused by eyeball movement. Intra-arterial cushions, which control blood flowat the branching sites, are found in both choroidal or retinal arterioles.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/01/20 alle ore 15:39:08