What will happen under the following conditions: the pO₂ is 95 mm Hg (arterial blood) and 40 mm Hg (tissue)?
A)Oxygen diffuses from the tissues into the blood.
B)Blood pH shifts from an acid to an alkaline range.
C)Carbon dioxide diffuses from the blood to the tissues.
D)Oxygen diffuses from the blood to the tissues.

Question

Quizplus · Accepted Answer

The partial pressure of oxygen (pO₂) is higher in the arterial blood (95 mm Hg) compared to the tissue (40 mm Hg). This creates a gradient and causes oxygen to diffuse from the blood to the tissues. Therefore, option D is the best choice. Option A is incorrect as it states oxygen diffuses from the tissues into the blood, which is opposite to the actual scenario. Option B is irrelevant as it does not relate to the given conditions. Option C is incorrect as it states carbon dioxide diffuses from the blood to the tissues, but the scenario only mentions the pO₂ and not the partial pressure of carbon dioxide.

What Will Happen Under the Following Conditions: the PO₂ Is