ANATOMY

Detailed explanation-1: -Pleura. Pleurae are serous membranes that separate the lungs and the wall of the thoracic cavity. The visceral pleura covers the surface of the lungs, and the parietal pleura covers the inside of the thorax, mediastinum, and diaphragm. A thin film of serous fluid fills the space between the two pleurae.

Detailed explanation-2: -The serous membranes are: Peritoneum-the peritoneal cavity is found within the abdominal & pelvic body cavities. Connecting peritoneum forms:-mesentery-ligament. Pleura-two pleural cavities (separated by mediastinum) are found within the thoracic cavity.

Detailed explanation-3: -Serous membranes have two layers. The parietal layers of the membranes line the walls of the body cavity (pariet-refers to a cavity wall). The visceral layer of the membrane covers the organs (the viscera). Between the parietal and visceral layers is a very thin, fluid-filled serous space, or cavity.

Detailed explanation-4: -There are four types of serous membranes: the pericardium that surrounds the heart, the pleura that surround the lungs, the peritoneum that surrounds the abdominal cavity and associated organs, and the tunica vaginalis that surrounds the testes. 2.

Detailed explanation-5: -Serous membranes are covered by a thin layer of serous fluid that is secreted by the epithelium. Serous fluid lubricates the membrane and reduces friction and abrasion when organs in the thoracic or abdominopelvic cavity move against each other or the cavity wall.