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adventitia Line breaks: ad¦ven|ti¦tia
Pronunciation: /ˌadvɛnˈtɪʃə/

Definition of adventitia in English:

noun

[mass noun]
The outermost layer of the wall of a blood vessel.
Example sentences
  • The outer layer of veins comprises the tunica adventitia.
  • The arteries were most susceptible, with bruising of the intima and adventitia and separation of the media from the vessel walls.
  • There is an intense inflammatory reaction concentrated primarily in the adventitia of this blood vessel with some extension into the tunica media.

Derivatives

adventitial

1
adjective
Example sentences
  • Aneurysmal development is caused by weakness in the muscular tunica media and stretching of the tunica intima and adventitial layers.
  • The inclusions may also be found in the adventitial cells of blood vessels.
  • Intimai proliferation and adventitial thickening may further reduce the cross-sectional area of the pulmonary vascular bed.

Origin

Late 19th century: shortening of modern Latin tunica adventitia 'additional sheath'.

Definition of adventitia in:

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