1.

Question : How are the lungs designed in human beings to maximise the area for exchange of gases?

Answer»

Solution :In LUNGS, the bronchioles terminatein balloon-like structures called alveoli . The alveoli provide extensive surface where the exchangeof gases can take place. The THIN, moist, permeable walls of alveolifacilitate quick diffusion andexchange of gases. Moreover it is richly supplied with bloodcapillaries.[The ALVEOLAR area, if spread out, COVERS about`80 m^(2)`which is more than our body surface area ]


Discussion

No Comment Found

Related InterviewSolutions