Question

Heat covering is called as
A. Peritoneum
B. Pleural membrane
C. Pericardium
D. Visceral membrane

Answer 1

Hint:It contains large quantities of fat that serve to keep the organs warm. It also contains blood vessels, nerves, lymph nodes, fat, elastic fibres for stretching, and collagen fibres for strength.

Complete answer:
The peritoneum is the serous membrane forming the lining of the abdominal cavity or coelom in amniotes and some invertebrates, such as annelids. It is composed of many folds that pass between or around the various organs. Two folds are of primary importance: the omentum, which hangs in front of the stomach and intestine; and the mesentery, which attaches the small intestine and much of the large intestine to the posterior abdominal cavity.

The omentum and mesentery region contains blood vessels, nerves, lymph nodes, fat, elastic fibres for stretching and collagen fibres for strength. The omentum is thinner than mesentery and is also lacy in appearance. It also contains large quantities of fat that keep the organs warm. The mesentery is fan-shaped and well-supplied with blood vessels which radiate to the intestine.

Additional information: It covers most of the intra-abdominal organs. It is also composed of a layer of mesothelium supported by a thin layer of connective tissue. This peritoneal lining of the cavity supports many abdominal organs and also serves as a conduit for blood vessels, lymphatic vessels, and nerves.

Hence, the correct answer is option (A) i.e., Peritoneum.

Note:The functions of peritoneum membranes are to prevent friction between closely packed organs by secreting serum to help holding the abdominal organs in their proper positions and to guard as a barrier against infection.