Adventitia

（重定向自Adventitial）

Adventitia is the outermost connective tissue covering of an organ, vessel, or other structure. It is also called the tunica adventitia or the tunica externa.

For example, the connective tissue that surrounds an artery is called the tunica externa because it is considered extraneous to the artery.

单词	Adventitial
释义	Adventitial 英语百科 Adventitia （重定向自Adventitial） Adventitia is the outermost connective tissue covering of an organ, vessel, or other structure. It is also called the tunica adventitia or the tunica externa. For example, the connective tissue that surrounds an artery is called the tunica externa because it is considered extraneous to the artery.
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