tunica intima


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Related to tunica intima: endothelium, atherosclerosis, tunica adventitia, tunica media, tunica externa

tunica intima

[′tü·nə·kə ′in·tə·mə]
(histology)
References in periodicals archive ?
This case challenges the current conceptions of psittacine atherosclerosis in that peripheral arterial lesions were widespread and caused clinical signs, coronary atherosclerotic lesions and arterial atherothrombotic lesions were present, and histopathologic features were similar to those reported in other species--that is, lesions were principally localized in the tunica intima and its periphery and were characterized by atheromatous plaques with an abundance of macrophage foam cells and extracellular lipids.
Lipid pools and cholesterol clefts, formed by deposits of lipid in the vessel wall, were also observed in the tunica intima of both categories.
Sites of deposition appear to correspond to areas in which elastin fibres and smooth muscle cells in the tunica intima and tunica media were disrupted (Fig.