Correct option is C
Explanation:
In a healthy human, the volume of pleural fluid is typically around 15-20 ml. This fluid is located in the pleural cavity, the space between the lungs and the chest wall. The pleural fluid serves several purposes, including lubrication to reduce friction between the pleura during respiration and maintaining surface tension for the optimal functioning of the lungs.
Information Booster:
Pleural fluid allows for smooth movement of the lungs against the chest wall during the expansion and contraction of the lungs in breathing.
The normal volume of pleural fluid is approximately 15-20 ml, but it can increase in certain conditions, leading to pleural effusion, which can affect lung function.
The pleural space normally has a low volume of fluid, as it is mainly a lubricating agent rather than a significant fluid reservoir.
The pleural cavity is essential for breathing mechanics, and pleural fluid helps maintain negative pressure to aid lung inflation.
Additional Knowledge:
55-60 ml (option 1) would be too much fluid in the pleural cavity and could indicate an abnormal condition like pleural effusion.
35-40 ml (option 2) is also higher than the normal range and would suggest possible pathology if found in a healthy individual.
1-5 ml (option 4) is an insufficient amount of fluid for proper pleural function.
