tunica adventitia


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Related to tunica adventitia: tunica intima, tunica media, Tunica serosa

tunica adventitia

[′tü·nə·kə ‚ad·vən′tish·ə]
(anatomy)
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The lung masses, the small nodules observed in the tunica adventitia of the esophagus and the epidural spinal mass were histologically characterized as metastases of the thyroid follicular-compact carcinoma.
In addition, the tunica adventitia of large arteries and veins contains a system of vessels, called vasa vasorum, that supply blood to the vascular walls themselves, as well as a network of autonomic nerves, called nervi vascularis, that control contraction of the smooth muscle in the vessel walls.
4) In those cases of SCAD with prominent inflammatory infiltrate, a common observation was the presence of periadventitial accumulation of eosinophils with associated hematoma between the outer medial wall and the tunica adventitia accompanied by dissection of the medial layer with resultant narrowing of the vascular lumen.
In some samples, the collagen deposits were extensive, extending from the tunica adventitia into the tunica media, and were typically seen in association with small blood vessels (Fig.
The tunica adventitia was comprised of loosely arranged meshwork of collagen, reticulin and elastin fibers as reported in goats (Gupta, 1978) and buffalo (Sudhakar et al).
The outer covering of the urethra is the tunica adventitia.
The tunica adventitia at this stage consisted of some collagen fibers, smooth muscles and elastic fibers.
05 [micro]m), thin, and moniliform Tps; TCs distributed in the whole connective tissue layer of tunica adventitia: TCs in the innermost layer of tunica adventitia, located at the juncture between media and adventitia, with their long axes oriented parallel to the outer elastic membrane; and TCs in outer layers of tunica adventitia, were embedded among transverse and longitudinal oriented collagen fibers, forming a highly complex three-dimensional meshwork.
Histologically the arterial wall consists of three concentric layers-the tunica adventitia tunica media and tunica intima.