Question

The serous membrane which covers the lungs is called
A) Pericardium
B) Peritoneum
C) Perichondrium
D) Pleura

Answer 1

Hint:The lungs are the double membranous respiratory organs of the higher organisms. The space between the two membranes is filled with pleural fluid and is termed as pleural cavity.

Complete answer:
To answer this question, we have to first know about the structure of the lungs. Lungs are the spongy pair of organs that are involved in the respiration process. It is located on each side of the chest that is thorax. The windpipe that is named as trachea conducts the inhalation of air inside the lungs through bronchi. The bronchi is divided into smaller branches and become microscopic. The bronchioles consist of microscopic air sacs named as alveoli where the oxygen gets absorbed into the blood and carbon dioxide the waste products travel to the alveoli from the blood this process is termed as exhalation. The alveoli consist of a thin layer in between that is termed as the interstitium that contain the blood vessels and cells supporting the alveoli.
Now, the lungs are covered with thin double layered tissue that is called the pleura. The tissue is similar to the tissue found in the chest cavity therefore, it is also called pleura cavity. Layer of fluid acts as the lubricant allows the lungs to work smoothly and to expand while breathing and contract while exhaling.

Hence the correct answer is option ‘D’.

Note:The pericardium is the double walled sac found in the heart and the root of the vessels. The two layers are named as serous and the fibrous layer and it consists of pericardial cavity. it works the same as the pleural cavity but remember both are different.