38. refers to the pressure in the arteries when the heart beats (contracts).
A. Diastolic pressure
B. Systolic pressure
C. Blood pressure
D. None of the above

B. Systolic pressure

Explanation:

Blood pressure is measured in millimeters of mercury (mmHg). It is denoted as systolic pressure/ diastolic pressure. A normal value for adult humans is 120/80.

The systolic pressure refers to the amount of pressure in your arteries during the contraction of your heart muscle. The diastolic pressure refers to the amount of pressure when your heart muscle is between beats.

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