Given value of PO2 and PCO2 of Alveolar air ,Arterial blood ,Venous blood ?

Alveolar air pressure of oxygen (PO2) – 105 mmHg

Alveolar air pressure of carbon dioxide (PCO2) - 40 mmHg

Partial pressure of Oxygen in arterial blood (PO2) – 75 to 100 mmHg

Partial pressure of carbon dioxide in arterial blood (PCO2) – 35 to 45 mmHg

Venous blood pressure PO2 – 35 to 40 mmHg

Venous blood pressure PCO2 – 40 to 50 mmHg

 

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In the Alveolar Air:-

PO2= 100mm Hg

PCO2 = 40mm Hg

.

In the Arterial Blood:-

PO2 = 75-100 mm Hg

PCO2 = 35-40 mm Hg

.

In the Venous Blood:-

PO2 = 40 mm Hg

PCO2 = 45 mm Hg

.

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