The membrane that lines passageways that open to the exterior environment is called __________.
A) the lamina propria
B) endothelium
C) a synovial membrane
D) a serous membrane (serosa)
E) a mucous membrane (mucosa)

Question

Quizplus · Accepted Answer

The membrane that lines passageways that open to the exterior environment is a mucous membrane (mucosa). Mucous membranes secrete mucus and are found lining the respiratory, digestive, reproductive, and urinary tracts. The lamina propria, endothelium, synovial membrane, and serous membrane (serosa) are found in other areas of the body and have different functions.

The Membrane That Lines Passageways That Open to the Exterior