Adventitia
the external covering of an organ or other structure, derived from connective tissue, especially the external covering of a blood vessel.
Historical Examples
The adventitia varies much in thickness, being better developed in the medium-sized than in the large arteries.
Arteriosclerosis and Hypertension: Louis Marshall Warfield
Up to the third decade there is only a strengthening of the media and adventitia.
Arteriosclerosis and Hypertension: Louis Marshall Warfield
Coincidently with this, there is thickening by a connective tissue growth in the adventitia.
Arteriosclerosis and Hypertension: Louis Marshall Warfield
There is also, as a rule, rather pronounced hypertrophy of the adventitia.
Arteriosclerosis and Hypertension: Louis Marshall Warfield
noun
the outermost covering of an organ or part, esp the outer coat of a blood vessel
adventitia ad·ven·ti·tia (ād’věn-tĭsh’ə, -vən-)
n.
The outermost membranous covering of an organ or structure, especially the outer coat of an artery.
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- Adventitial
the external covering of an organ or other structure, derived from connective tissue, especially the external covering of a blood vessel. noun the outermost covering of an organ or part, esp the outer coat of a blood vessel adventitial ad·ven·ti·tial (ād’věn-tĭsh’əl, -vən-) adj. Of or relating to the adventitia of an organ or blood vessel. […]
- Adventitial cell
adventitial cell adventitial cell n. See pericyte.
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- Adventitious
associated with something by chance rather than as an integral part; extrinsic. Botany, Zoology. appearing in an abnormal or unusual position or place, as a root. Historical Examples Such acknowledgments are of high value in keeping the issue clear, if not always of all adventitious, yet of all venomous matter. The Works of Robert G. […]
- Adventitious cyst
adventitious cyst adventitious cyst n. See pseudocyst.