in which form Oxygen and Carbon dioxide is transported in humans
Answers
Answer:
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.
Transport of Oxygen: Haemoglobin transports oxygen molecule to all the body cells for cellular respiration .The haemoglobin pigment present in the blood gets attached to O2 molecules that are obtained from breathing and thus forms oxyhaemoglobin .This oxygenated blood is then distributed to all the body cells by the heart. After giving away O2 to the body cells, blood takes away CO2 which is the end product of cellular respiration and blood becomes de-oxygenated.
Transport of carbon dioxide: Since haemoglobin pigment has less affinity for CO2, CO2 is mainly transported in the dissolved form. This deoxygenated blood gives CO2 to lung alveoli and takes O2 in return.