adventitia


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adventitia

 [ad″ven-tish´e-ah]
tunica adventitia. adj., adj adventi´tial.

ad·ven·ti·ti·a

(ad-ven-tish'ă), [TA]
The outermost connective tissue covering of any organ, vessel, or other structure (or part thereof) not covered by a serous coat (visceral peritoneum); instead, the covering is properly derived from without (that is, from the surrounding connective tissue) and does not form an integral part of such organ or structure. Terminologia Anatomica lists adventitia (tunica adventitia) of the following organs: blood vessels, ductus deferens, esophagus, renal pelvis, seminal glands, and ureters.
Synonym(s): tunica adventitia [TA], membrana adventitia (1)
[L. adventicius, coming from abroad, foreign, fr. ad, to + venio, to come]

adventitia

/ad·ven·ti·tia/ (ad″ven-tish´e-ah)

adventitia

(ăd′vĕn-tĭsh′ə, -vən-)
n.
The membranous outer covering of an organ or a blood vessel.

ad′ven·ti′tial adj.

adventitia

[ad′ventish′ə]
Etymology: L, adventitius, coming from abroad
the outermost layer, composed of connective tissue with elastic and collagenous fibers, of an artery or another structure.

adventitia

The outermost layer of a visceral organ; e.g., serosa.

ad·ven·ti·ti·a

(ad'vĕn-tish'ă) [TA]
The outermost connective tissue covering of any organ, vessel, or other structure not covered by a serosa.
Synonym(s): tunica adventitia [TA] .
[L. adventicius, coming from abroad, foreign, fr. ad, to + venio, to come]

adventitia

The outer covering or layer of an organ, especially a blood vessel.

ad·ven·ti·ti·a

(ad'vĕn-tish'ă) [TA]
Outermost connective tissue covering of any organ, vessel, or other structure not covered by a serous coat.
[L. adventicius, coming from abroad, foreign, fr. ad, to + venio, to come]

adventitia

the outer, connective tissue coat of an organ or structure, especially the outer coat of an artery or vein.
References in periodicals archive ?
Caption: Figure 5: The eNOS immunoreactivity in the HFCS + CAPE treated rats' endothelium (thin arrow) and adventitia (thick arrow) of thoracic aorta, x 400.
In support of TNF-[alpha] and NF-kB data in this study, aorta isolated from both ID and IR animals revealed increased leukocyte infiltration in the adventitia and marked endothelial cells pyknosis while baicalein significantly reduced leukocyte infiltration and endothelial cells pykosis.
Eosinophilic infiltrates have been found in the coronary artery adventitia in autopsy studies.
1) The ganglion theory suggests that adventitial cysts arise as capsular synovial structures that track along vascular structures to involve the adventitia of the adjacent vessel, either during development or later in life.
Delivering drugs through the blood vessel wall into the perivascular space and adventitia allows for direct, highly controllable and concentrated treatment, not only minimizing the toxicity of systemic administration but also avoiding the "washing away" of drug into the bloodstream.
It is made possible by the fact that the renal afferent and efferent sympathetic nerves are located in the adventitia of the renal artery wall, well within reach of radiofrequency energy delivered by a special catheter.
Bleeding in a pseudoaneurysm is contained by the adventitia and/or surrounding fascia generating a very fine wall, and the hematoma thus formed is gradually surrounded by a layer of fibrous tissue, analogous to the normal adventitia artery; while the three layers of the vessel wall are preserved in the true aneurysm (tunica intima, media and adventitia), the diameter of these pseudoaneurysms increases with the passage of time due to blood pressure.
Large mediastinal teratoma originating from the aortic adventitia.
Cavernous lymphangioma, comprised of dilated lymphatic vessels with surrounding adventitia.
Coronary arteries, like the other arteries in the body, are composed of three basic layers: the intima, the media, and the adventitia.
The infant also had moderate neutrophil and macrophage infiltration of the umbilicus at the body wall; neutrophilic inflammation in the media and adventitia of 1 umbilical artery at the level of the bladder; and mild, unilateral, focal, segmental, neutrophilic glomerulitis and tubulointerstitial nephritis.
The rupture involved the intima and media for the whole circumference of the vessel, leaving only the adventitia intact.

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