Question

how is lungs designed in human beings to maximise the area for exchange of gases​

Answer 1

Answer:

the inner wall of lungs contain small sac like structure called alveoli which increases the surface area of lungs to absorb the oxygen and dissolve it in the blood , this alveoli is about 1500000 in number which helps you to absorb more oxygen from the trachea

Explanation:

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Answer 2

• Gas exchange is the delivery of oxygen from the lungs to the bloodstream, and the elimination of carbon dioxide from the bloodstream to the lungs. It occurs in the lungs between the alveoli and a network of tiny blood vessels called capillaries, which are located in the walls of the alveoli.

• The walls of the alveoli actually share a membrane with the capillaries in which oxygen and carbon dioxide move freely between the respiratory system and the bloodstream. Oxygen molecules attach to red blood cells, which travel back to the heart. At the same time, the carbon dioxide molecules in the alveoli are blown out of the body with the next exhalation.