When is arterial pressure at its highest?

When is arterial pressure at its highest?

• A. Immediately after the ventricle contracts (systolic)
• B. Just before the ventricle contracts
• C. During ventricle relaxation (diastolic)
• D. At mid-diastole

Answer: (A)

The highest arterial pressure occurs during systole, specifically immediately after the ventricle contracts. When the ventricle ejects blood into the aorta, the arterial system is rapidly pressurized, creating the systolic peak. After ejection ends, the arteries recoil and pressure falls during diastole, so diastolic and mid-diastolic pressures are lower. The moment just before contraction isn’t when the arteries are at their maximum pressure, since no blood is being pushed into them yet.

The highest arterial pressure occurs during systole, specifically immediately after the ventricle contracts. When the ventricle ejects blood into the aorta, the arterial system is rapidly pressurized, creating the systolic peak. After ejection ends, the arteries recoil and pressure falls during diastole, so diastolic and mid-diastolic pressures are lower. The moment just before contraction isn’t when the arteries are at their maximum pressure, since no blood is being pushed into them yet.