Alveolar `P_(o_(2))` is……….than the venous `P_(o_(2))` while artierial `P_(o_(2))` is ………..than the alveolar `P_(o_(2))`.

Explanation

To answer the question, we need to fill in the blanks regarding the relationship between the alveolar partial pressure of oxygen (P_o2), venous partial pressure of oxygen, and arterial partial pressure of oxygen.

1. **Understanding Alveolar P_o2**: The alveolar partial pressure of oxygen (P_o2) is approximately 104 mmHg. This value indicates the amount of oxygen present in the alveoli of the lungs.

2. **Understanding Venous P_o2**: The venous partial pressure of oxygen (P_o2) is significantly lower than that of the alveolar P_o2. The typical range for venous P_o2 is between 30 to 40 mmHg. Therefore, we can conclude that the alveolar P_o2 is higher than the venous P_o2.

3. **Understanding Arterial P_o2**: The arterial partial pressure of oxygen (P_o2) typically ranges from 75 to 100 mmHg. This value is generally lower than the alveolar P_o2, which is 104 mmHg. Thus, we can conclude that the arterial P_o2 is lower than the alveolar P_o2.

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