tunica adventitia


Also found in: Dictionary, Thesaurus, Medical.
Related to tunica adventitia: tunica intima, tunica media, Tunica serosa

tunica adventitia

[′tü·nə·kə ‚ad·vən′tish·ə]
(anatomy)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Por ultimo, basandose en Terminologia Anatomica y el principio de construccion del cuerpo humano de "estratificacion", sugerimos cambiar la traduccion en Terminologia Anatomica para los terminos: Tunica mucosa linguae, Tunica serosa, Tunica adventitia, Tunica mucosa oris por: Mucosa linguae, Cappa serosa, Cappa adventitia, Mucosa oris.
Note the presence of infiltratory cells along the aortic wall (arrow) and deposition of perivascular adipose tissue (PVAT) in the tunica adventitia of (b) OVX.
(a) and (b) Normal ICA with uniform thickness, regular fiber arrangement, and complete structure of tunica adventitia, media, and intima in the Non-CRM-Normal group and CRM-Normal group; (c) atherosclerotic ICA with slightly thickened intima (red arrows), edematous cells, thinly stained cytoplasm, and disordered cells arrangement (black arrows) in the Non-CRM-Model group; (d) atherosclerotic ICA with severe thickened and atherosclerotic intima, disordered fiber arrangement, and infiltration of foam cell (black arrows) and the calcified lesion at the junction between the tunica adventitia and tunica media (blue arrows) in the CRM-Model group.
The external elastic membrane is a layer of elastin that separates the tunica media from the tunica adventitia. Variable amounts of elastin, reticular fibers.
Eosinophilic coronary monoarteritis (ECM) is a rare event characterized by the presence of an inflammatory infiltrate, predominantly of eosinophils, in the tunica adventitia and tunica media of the coronary artery.
Tunica adventitia of arteries was previously believed to be involved only in physical and nutritive support of the vessel wall [1].
Histopathologically all coronary aneurysms involve destruction of the tunica media which is thinned, sometimes markedly, sometimes to the point of no longer being identifiable between the tunica intima and tunica adventitia. The normal smooth muscle cells and elastic fibers are replaced by hyalinized connective tissue.3
Histologically, a 'Normal' aorta was characterised as having a tunica intima that was relatively thin and loose, with regularly arranged smooth-muscle cells and elastin fibres in the tunica media, and a loosely organised tunica adventitia. 'Pathology' comprised two subgroups: (i) samples with cells not normally seen in significant numbers in the vessel wall, or cells that indicate disease or inflammatory processes, e.g.
Tubular organs not closely associated with the celomic cavities (e.g., urethra) have a different type of outer covering; tunica adventitia. This is a loose connective tissue devoid of mesothelium.
Moreso, sections of ductus arteriosus with lumen, tunica intima, prominent tunica media and thin tunica adventitia were equally observed in all foetal age groups (Fig.