What is Mesothelium
Frequently Asked Mesothelioma Questions
The mesothelium is a membrane covering and protecting most of the body's internal organs. The mesothelium contains two layers of cells, with one surrounding the organ and the other forming a sac around it. The mesothelium creates a lubricating fluid which is released between these layers allowing moving organs, such as the lungs and heart, to glide easily against nearby structures.
The mesothelium has different names, depending on its location in the body:
- The peritoneum is the mesothelial tissue that covers most organs in the abdominal cavity.
- The pleura is the membrane surrounding the lungs and lining the wall of the chest cavity.
- The pericardium covers and protects the heart.
- The mesothelial tissue surrounding the male internal reproductive organs is called the tunica vaginalis testis.
- The tunica serosa uteri covers the internal reproductive organs in women.

