Blood pressure is expressed as

A) systolic pressure / diastolic pressure.
B) diastolic pressure / pulse pressure.
C) pulse pressure / systolic pressure.
D) diastolic pressure / systolic pressure.
E) systolic pressure / pulse pressure.

Blood pressure is measured as two numbers, systolic pressure (the top number) and diastolic pressure (the bottom number). The systolic pressure measures the pressure in the arteries when the heart beats, while the diastolic pressure measures the pressure in the arteries between beats, when the heart is resting. The normal range for systolic pressure is 90-119 mmHg and for diastolic pressure is 60-79 mmHg.