Answer:
The diastolic blood pressure (80 mmHG) is the pressure in artery measured during the diastolic phase while the systolic blood pressure (120 mmHg) is the one measured during systolic phase of cardiac cycle.
Step-by-step explanation:
The diastolic blood pressure is the pressure in the artery during the diastolic phase of the cardiac cycle, that is, when the left ventricle undergoes relaxation. It is 80 mmHg for a normal adult.
And the systolic blood pressure is the blood pressure in an artery during the systolic phase of the cardiac cycle, that is, when the left ventricle undergoes contraction. It is 120 mmHg for a normal adult.