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The partial pressure of oxygen in arterial blood refers to the amount of oxygen pressure in arteries. Likewise, the partial pressure of carbon dioxide in arterial blood refers to the amount of carbon dioxide pressure in arteries.

In alveoli, the partial pressure of oxygen (PO2) is high, while in pulmonary capillaries, it is low. Therefore, a difference in PO2 is present between the metabolically active tissues and the oxygenated blood arteries, as partial pressure plays a significant role in gas exchange. In arteries, the PO2 is around 100 mm of mercury.

Thus, the blood reaching active muscle cells in arterioles has a higher PO2.

Therefore, the given option is true.

The carbon dioxide鈥檚 partial pressure is 45 mm of mercury in muscle tissue, and PCO2 signals the respiratory component of the blood gas. The PO2 in muscle tissues is 40mm Hg due to the demand for oxygen supply in cellular respiration.

Thus, the blood reaching active muscle cells in arterioles has a lower PCO2.

Therefore, the given option is false.

The bulk of bicarbonate concentration is formed within the cell and then carried to the plasma. The concentration of bicarbonate ions is lower in arterioles compared with venous blood.

Thus, the blood reaching active muscle cells in arterioles has a lower bicarbonate concentration as only 26% of the total CO2 content of blood is found in the form of bicarbonate within RBCs.

Therefore, the given option is false.

On average, arterial pH ranging from 7.35 to 7.45 is higher than venous pH, which is 0.03. In active tissues with low pH, a high concentration of carbon dioxide is present.

Thus, the blood reaching active muscle cells in arterioles do not have a low pH.

Therefore, the given option is false.