CO2 Transport and Partial Pressure

CO2 Transport

• CO2 transport is dependent on the partial pressure of CO2.
• In tissues, the partial pressure of CO2 is higher than in the blood, causing CO2 to diffuse from tissues into the blood.
• In the blood, CO2 reacts with water to form bicarbonate ions.
• Bicarbonate ions are then transported to the lungs.
• The transportation of CO2 helps maintain the acid-base balance in the body.

CO2 Exchange in the Lungs

• In the lungs, the process is reversed: bicarbonate ions combine with hydrogen ions to release CO2 and water.
• The partial pressure of CO2 in the lungs is lower than in the blood, allowing CO2 to diffuse from the blood into the lungs.
• This process enables the exhalation of CO2 from the lungs.

Test your knowledge on CO2 transport in the body and understand how it is dependent on partial pressure. Learn about the role of bicarbonate ions and the reverse process that occurs in the lungs.