Suppose the Partial Pressure of Oxygen Is Measured in a Region

question 5

Multiple Choice

Suppose the partial pressure of oxygen is measured in a region of your body.The readings indicate that the partial pressure of oxygen in the blood is 40 mm Hg and the partial pressure of oxygen in the surrounding tissue is 100 mm Hg.The region where these readings were taken is most likely in your

• A) liver.
• B) skeletal muscle.
• C) heart.
• D) lungs.
• E) kidneys.

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Definitions:

Action Potentials

Electrical impulses that travel along the membrane of a nerve or muscle fiber, initiating activity or movement.

Coronary Sinus

Short trunk that receives most of the veins of the heart and empties into the right atrium.

Cardiac Veins

Blood vessels that return deoxygenated blood from the myocardium (heart muscle) to the right atrium.

Coronary Vessels

Blood vessels that supply blood to the heart muscle, including coronary arteries and veins.