How carbondioxide and oxygen exchange in breathing
Answers
Answer:
Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them. As shown below, inhaled oxygen moves from the alveoli to the blood in the capillaries, and carbon dioxide moves from the blood in the capillaries to the air in the alveoli.
Explanation:
Oxygen and carbon dioxide in human beings are transported in various ways. The majority of oxygen, that is 97%, is transported as oxyhaemoglobin, a combined state of oxygen and haemolgoin.
The remaining oxygen is present in the form of dissolved oxygen in blood plasma. The majority of carbon dioxide, that is about 70%, is transported in the form of bicarbonate in the blood plasma.
This bicarbonate is involved in maintaining the pH of the blood. About 23% of carbon dioxide is transported in the form of carbminohaemoglobin, a combined state of carbon dioxide and haemoglobin. The remaining 7% is present in the form of dissolved carbon dioxide in plasma.