GENERAL KNOWLEDGE

Detailed explanation-1: -The respiratory system’s main job is to move fresh air into your body while removing waste gases. Once in the lungs, oxygen is moved into the bloodstream and carried through your body. At each cell in your body, oxygen is exchanged for a waste gas called carbon dioxide.

Detailed explanation-2: -The purpose of the respiratory system is to perform gas exchange. Pulmonary ventilation provides air to the alveoli for this gas exchange process. At the respiratory membrane, where the alveolar and capillary walls meet, gases move across the membranes, with oxygen entering the bloodstream and carbon dioxide exiting.

Detailed explanation-3: -Large surface area to allow faster diffusion of gases across the surface. Thin walls to ensure diffusion distances remain short. Good ventilation with air so that diffusion gradients can be maintained. Good blood supply to maintain a high concentration gradient so diffusion occurs faster.