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Questions and Answers
True or false: CO2 diffuses from the tissues into the blood?
True or false: CO2 diffuses from the tissues into the blood?
True (A)
True or false: Bicarbonate ions are transported to the lungs?
True or false: Bicarbonate ions are transported to the lungs?
True (A)
True or false: The transportation of CO2 helps maintain the acid-base balance in the body?
True or false: The transportation of CO2 helps maintain the acid-base balance in the body?
True (A)
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Study Notes
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.
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