| adventitia | The outermost connective tissue covering of any organ, vessel, or other structure not covered by a serosa; instead, the covering is properly derived from without (i.e., from the surrounding connective tissue) and does not form an integral part of such organ or structure. Synonym: tunica adventitia, membrana adventitia. Origin: L. Adventicius, coming from abroad, foreign, fr. Ad, to + venio, to come (05 Mar 2000) |
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| adventitial | Relating to the outer coat or adventitia of a blood vessel or other structure. Synonym: adventitious. (05 Mar 2000) |
| adventitial cell | <pathology> Cell associated with the walls of small blood vessels: not a smooth muscle cell, nor an endothelial cell. (18 Nov 1997) |
| adventitial neuritis | Inflammation of the sheath of a nerve. See: perineuritis. (05 Mar 2000) |
| membrana adventitia | The outermost connective tissue covering of any organ, vessel, or other structure not covered by a serosa; instead, the covering is properly derived from without (i.e., from the surrounding connective tissue) and does not form an integral part of such organ or structure. Synonym: tunica adventitia, membrana adventitia. Origin: L. Adventicius, coming from abroad, foreign, fr. Ad, to + venio, to come (05 Mar 2000) |
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| tunica adventitia | The outermost connective tissue covering of any organ, vessel, or other structure not covered by a serosa; instead, the covering is properly derived from without (i.e., from the surrounding connective tissue) and does not form an integral part of such organ or structure. Synonym: tunica adventitia, membrana adventitia. Origin: L. Adventicius, coming from abroad, foreign, fr. Ad, to + venio, to come (05 Mar 2000) |