1.

Question : Howare the alveoli designed to maximisethe exchange of gases ?

Answer»

SOLUTION :In lungs, the bronchioles terminate in balloon-like structurescalled alveoli. The alveoli provideextensive surface wherethe exchange of GASES can take PLACE. The THIN, moist, permeable walls of alveoli facilitatequick diffusion and exchange of gases. Moreover it isrichly supplied with blood capillaries. [Thealveolar AREA, if spread out, it coversabout`80 m^(2)`which is more than ourbody surface area]


Discussion

No Comment Found

Related InterviewSolutions