Final answer:
The systolic blood pressure is the measurement of blood pressure during ventricular contraction, while diastolic blood pressure measures blood pressure during ventricular relaxation.
Step-by-step explanation:
The systolic blood pressure is the measurement of blood pressure during ventricular contraction, or systole. It is the higher value and represents the pressure exerted by blood on the blood vessels while the heart is beating. In contrast, diastolic blood pressure measures blood pressure during ventricular relaxation, or diastole, and is the lower value of the blood pressure reading.