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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    adventitial neuritis adventitial neuritis n. Inflammation of the sheath of a nerve.

  • 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. […]



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