Serous membranes
A)line all cavities that open to the outside.
B)cover the brain and spinal cord.
C)are connective tissue membranes.
D)line the abdominopelvic and thoracic cavities.

Question

Quizplus · Accepted Answer

Serous membranes line the abdominal and thoracic cavities and their organs, such as the lungs, heart, liver, and stomach. They secrete a fluid that lubricates the organs and reduces friction as they move against one another. They are not found lining cavities that open to the outside, such as the mouth or anus, nor do they cover the brain and spinal cord. They are not connective tissue membranes; rather, they are composed of two layers of epithelial tissue with a thin layer of fluid in between them.

Serous Membranes