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  • Despite a significant amount of  being present in the blood, the blood does not become acid

Despite a significant amount of \mathrm{CO}_2 being present in the blood, the blood does not become acidic. This is due to which of the following reasons?

Option: 1

Continuous diffusion of \mathrm{CO}_2  through the tissues, preventing its accumulation.


Option: 2

Significant involvement of blood buffers in \mathrm{CO}_2 transport.


Option: 3

Absorption of \mathrm{CO}_2  by the leukocytes.


Option: 4

Formation of \mathrm{H}_2 \mathrm{CO}_3 through \mathrm{CO}_2 combined with water, followed by neutralization by \mathrm{Na}_2 \mathrm{CO}_3.


Answers (1)

best_answer

Buffers present in blood such as bicarbonate and hemoglobin, play a crucial role in \mathrm{CO}_2 transport. When \mathrm{CO}_2  is released in tissues, it combines with water to form carbonic acid, which dissociates into bicarbonate ions and hydrogen ions. Bicarbonate ions act as a buffer, maintaining stable blood \mathrm{pH} by accepting excess hydrogen ions. Hemoglobin also binds with hydrogen ions, reducing blood acidity. These mechanisms ensure efficient \mathrm{CO}_2 transport while regulating \mathrm{pH} balance in the blood. Hence, the correct answer is option 2 .

Posted by

shivangi.bhatnagar

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