What is the difference between systolic and diastolic blood pressure?

The correct answer is that systolic blood pressure represents the pressure in the arteries during heartbeats, whereas diastolic blood pressure indicates the pressure in the arteries when the heart is resting between beats. During systole, the heart contracts and pumps blood into the arteries, creating higher pressure, which is recorded as the systolic measurement. Conversely, during diastole, the heart relaxes and fills with blood, leading to lower pressure in the arteries, recorded as the diastolic measurement.

Understanding this distinction is crucial for assessing a person's cardiovascular health. Blood pressure readings are typically expressed as systolic over diastolic (e.g., 120/80 mmHg), providing insight into the functioning of the heart and vascular resistance. Recognizing the phases of the cardiac cycle associated with these pressures helps healthcare professionals evaluate and manage conditions like hypertension effectively.