Question

In mammals, pleural membranes cover the lungs as well as insides of the rib cage. The pleural fluid in between the two membranes – 

(A) dissolves oxygen for transfer to the alveoli 

(B) dissolves CO₂ for tranfer to the blood 

(C) provides partial pressure 

(D) reduces the friction between the ribs and the lungs 

Answer 1

Correct option (D) reduces the friction between the ribs and the lungs

Explanation:

Pleural fluid is a serous fluid produced by normal pleural. Pleural fluid allows the pleural to slide effortlessly against earth other during ventilation.