adventitia

American  

[ad-ven-tish-ee-uh, -tish-uh] / ˌæd vɛnˈtɪʃ i ə, -ˈtɪʃ ə /

noun

Anatomy.

1. the external covering of an organ or other structure, derived from connective tissue, especially the external covering of a blood vessel.

---

adventitia British  

/ ˌædvɛnˈtɪʃɪə, -ˈtɪʃə /

noun

1. the outermost covering of an organ or part, esp the outer coat of a blood vessel

---

Other Word Forms

• adventitial
  adjective

---

Etymology

Origin of adventitia

1875–80; < Latin adventīcia, neuter plural of adventīcius adventitious

---

Example Sentences

See Examples For:

adventitia

These mimic the layered structure of the native vascular wall, which, from inside out, is composed of the tunica intima, tunica media and tunica adventitia tissues.

From Science Daily ● Jan. 13, 2024

As mentioned previously, the most superficial layer of the esophagus is called the adventitia, not the serosa.

From Textbooks ● Jun. 19, 2013

Instead of serosa, the mouth, pharynx, and esophagus have a dense sheath of collagen fibers called the adventitia.

From Textbooks ● Jun. 19, 2013

In contrast to the stomach and intestines, the loose connective tissue of the adventitia is not covered by a fold of visceral peritoneum.

From Textbooks ● Jun. 19, 2013

The outermost is the tunica adventitia, composed of connective tissue; immediately internal to this is the yellow elastic coat; within this again the muscular coat, formed of involuntary.

From Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 6 "Armour Plates" to "Arundel, Earls of" by Various

Random Word

Spin the wheel and learn a new word!

---