Question

Amount of ${CO}_2$ delivered by every 100 ml of deoxygenated blood is

• A. 7 ml
• B. 5 ml
• C. 4 ml
• D. 27 ml

Answer 1

The correct option is C 4 ml

Transport of carbon dioxide is carried by haemoglobin in the form of carbaminohaemoglobin. the binding is affected by the partial pressure of the gas. In tissues, the partial pressure of carbon dioxide is more, therefore, haemoglobin binds with it. In alveoli when the partial pressure of oxygen increases, Hb dissociates from carbon dioxide and binds with oxygen.

Every 100 ml of deoxygenated blood delivers approximately 4 ml of carbon dioxide gas.

So, the correct option is '4 ml'.