What type of membrane lines cavities that open to the outside of the body?

During an organ transplant some serous membrane is transplanted along with the organ. Based on the anatomy of serous membranes, which part of the serous membrane would likely be transplanted along with the organ?

The disease pericarditis refers to inflammation of the serous membrane around the heart and can cause intensely sharp chest pain. How does the function of the serous membranes relate to the symptoms of chest pain from pericarditis?

Serous fluid functions in:

a. Providing temperature stability

b. Lubricating serous membranes as organs move in the cavity

c. Protecting the organs from mechanical trauma

d. Decreasing the weight of the organs and keeping them buoyant