_______ Membranes Line the Body Cavities That Open to the Outside

Question

_______ membranes line the body cavities that open to the outside of the body.
A) Mucous
B) Serous
C) Parietal
D) Visceral

Accepted Answer

Mucous membranes line body cavities that open to the outside of the body, such as the respiratory, digestive, and reproductive tracts. Serous membranes, on the other hand, line body cavities that do not open to the outside, such as the pleural cavity (around the lungs) and peritoneal cavity (around the organs of the abdomen). Parietal and visceral membranes are subtypes of serous membranes, referring to the outer and inner layers respectively.