Question

12. How are the lungs designed in human beings to maximise the are for exchange of
Gases ?​

Answer 1

Answer:

The lungs are maximise when we inhale and when we exhale then they minimised diphagram get down when we exhale and get up when we inh

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.