endothelium


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endothelium

 [en″do-the´le-um] (pl. endothe´lia) (Gr.)
the layer of epithelial cells that lines the cavities of the heart and of the blood and lymph vessels, and the serous cavities of the body.

en·do·the·li·um

, pl.

en·do·the·li·a

(en'dō-thē'lē-ŭm, -lē-ă), [TA]
A layer of flat cells lining, especially blood and lymphatic vessels and the heart.
[endo- + G. thēlē, nipple]

endothelium

/en·do·the·li·um/ (-the´le-um) pl. endothe´lia   the layer of epithelial cells that lines the cavities of the heart, the serous cavities, and the lumina of the blood and lymph vessels.

endothelium

(ĕn′dō-thē′lē-əm)
n. pl. endothe·lia (-lē-ə)
A thin layer of flat epithelial cells that lines serous cavities, lymph vessels, and blood vessels.

en′do·the′li·al, en′do·the′li·oid′ adj.

endothelium

[en′dōthē′lē·əm]
Etymology: Gk, endon + thele, nipple
the layer of simple squamous epithelial cells that lines the heart, the blood and lymph vessels, and the serous cavities of the body. It is highly vascular, heals quickly, and is derived from the mesoderm.

en·do·the·li·um

, pl. endothelia (en'dō-thē'lē-ŭm, -ă) [TA]
A layer of flat cells that line the blood vessels, lymphatic vessels, and the heart.
[endo- + G. thēlē, nipple]

endothelium

The single layer of flattened cells that lines the blood vessels, the heart and some of the cavities of the body. Endothelium is no longer regarded as simply a non-stick lining. It is now known to be a physiologically and biochemically dynamic structure that exerts a regulatory control on the tone of blood vessels and on the blood flow, mainly by the release of the hormone NITRIC OXIDE. It regulates the growth and repair of blood vessels; modulated the contraction and relaxation of the heart; protects blood cells from damage; helps to control the inflammatory process; prevents blood clotting within vessels; and offers a selectively permeable barrier to the passage through it of molecules.

endothelium

a layer of flattened, simple, epithelial cells, one cell thick, lining a tube such as the heart, blood vessels and lymph vessels of vertebrates.

endothelium

layer of highly metabolically active, flat squamous cells lining the entire circulatory system, including heart

en·do·the·li·um

, pl. endothelia (en'dō-thē'lē-ŭm, -ă) [TA]
A layer of flat cells that line the blood vessels, lymphatic vessels, and the heart.
[endo- + G. thēlē, nipple]

endothelium

(en´dōthē´lēəm),
n the layer of simple squamous epithelial cells that line the heart, the blood and lymph vessels, and the serous cavities of the body.

endothelium

pl. endothelia [Gr.] the layer of epithelial cells that lines the cavities of the heart and of the blood and lymph vessels, sometimes applied to other internal epithelial surfaces.

corneal endothelium
lines the inner surface of the cornea, between the corneal stroma and aqueous humor; called also the posterior epithelium.
References in periodicals archive ?
The vasodilation effects of EOFAZ in rat aortic rings with or without endothelium were observed and compared with DMSO K-H buffer (final concentration of DMSO in bath less than 0.
The endothelium of blood vessels in tissue cultures, as Maximow(26) has shown, does not give rise to ameboid elements.
The secret of living a long and happy life while a bit overweight is all down to a healthy endothelium.
This in vivo efficacy was observed in a broad range of tissues including liver, heart, intestine, spleen, and skeletal muscle, reflecting silencing of the Tie2 mRNA in the vascular endothelium of these tissues.
Although phenylephrine-induced contractile responses are depressed in mesenteric artery rings with endothelium from young rats compared to those without endothelium, no such effect is observed in mesenteric artery rings from 65-week-old rats indicating that aging is associated with reduced basal NO formation.
Chronic arterial diseases are characterized by impairment of synthesis of nitric oxide from endothelium and by impaired dilation of arterial vessels following the ischemic stimulus.
Recent evidence also suggests that [beta]adrenergic blockade, in addition to blocking the adrenergic receptors and decreasing heart rate and blood pressure, improves cardiac efficiency [beta]-blockers have also been shown to limit plaque formation in the carotid vascular endothelium at doses that have no effect on either blood pressure or heart rate.
A healthy endothelium promotes optimal blood flow, prevents blood clots, prevents plaque buildup, and prevents inflammation.
The endothelium requires a minimum number of cells in order to maintain its metabolic pump function as well as creating a barrier to restrict the amount of aqueous entering the corneal stroma.
Endothelial function has largely been assessed as endothelium-dependent vasomotion, at least in part based on the assumption that impaired endothelium-dependent vasodilation also reflects the alteration of other important functions of the endothelium.
From an applied perspective, the endothelium is responsible for the important agronomic trait of seed quality and growing evidence suggests that seed proanthocyanidins are beneficial for human health.
Methods: We evaluated whether the vascular effects of testosterone were altered in the presence of endothelium or it changed in accordance to gender or the concentration of testosterone.

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