MICROANATOMY

Detailed explanation-1: -At the same time, a waste gas called carbon dioxide moves from your blood to your lungs and is expelled.

Detailed explanation-2: -When you inhale (breathe in), air enters your lungs, and oxygen from that air moves to your blood. At the same time, carbon dioxide, a waste gas, moves from your blood to the lungs and is exhaled (breathed out).

Detailed explanation-3: -Carbon dioxide (CO2) is a waste product of cellular metabolism. You get rid of it when you breathe out (exhale). This gas is transported in the opposite direction to oxygen: It passes from the bloodstream – across the lining of the air sacs – into the lungs and out into the open.

Detailed explanation-4: -Some amount of inspired air in the alveoli does not participate in gas exchange. This happens as some alveoli due to 908various reasons have little or no blood supply. Therefore, air in these alveoli also becomes part of the wasted air. The volume of air in these alveoli is referred to as alveolar dead space.

Detailed explanation-5: -One of the waste products produced by cells is another gas called carbon dioxide. The respiratory system takes up oxygen from the air we breathe and expels the unwanted carbon dioxide.