<Dl> <Dt> Arterial blood carbon dioxide tension </Dt> </Dl> <Dt> Arterial blood carbon dioxide tension </Dt> <P> P CO--Partial pressure of carbon dioxide at sea level (765 mmHg) in arterial blood is between 35 mmHg and 45 mmHg . </P> <Dl> <Dt> Venous blood carbon dioxide tension </Dt> </Dl>

The partial pressure of carbon dioxide in arterial blood is approximately