A) 17 and 30 millions, respectively
B) 5 and 300 millions, respectively
C) 19 and 300 millions, respectively
D) 18 and 300 lakh, respectively
Correct Answer: B
Solution :
In man, the total number of lobes present in both the lungs is 5 of which three lobes ie, anterior, posterior and azygous are present in right lung and two lobes called left anterior and left posterior in the left lung. The basic functional units of lungs are alveoli. The number of alveoli in human beings is 300 millions.
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