Serosa vs. Adventitia

Serosanoun

A membrane which lines an internal cavity to protect the contents and which secretes serum.

Serosanoun

a thin membrane lining the closed cavities of the body; has two layers with a space between that is filled with serous fluid

Adventitianoun

The outermost layer of epithelial tissue encasing a visceral organ.

Adventitianoun

the membranous outer covering of an organ or blood vessel.

Adventitianoun

an enveloping or covering membrane or layer of body tissue

Adventitia

The adventitia, (advɛnˈtɪʃə) is the outer layer of fibrous connective tissue surrounding an organ.The outer layer of connective tissue that surrounds an artery, or vein – the tunica externa, is also called the tunica adventitia. To some degree, its role is complementary to that of the serosa, which also provides a layer of tissue surrounding an organ.