Cardiac Cycle and Blood Pressure Worksheet

What is the sequence of events in one heartbeat called?

• Blood pressure

• Cardiac cycle

• Pulmonary circulation

• Oxygenation process

Which phase of the cardiac cycle involves the ventricles contracting and pushing blood into the pulmonary artery and aorta?

• Atrial systole

• Diastole

• Ventricular systole

• Valve closure

What is the definition of blood pressure?

• The amount of blood in the heart

• The force of blood against artery walls

• The rate of heartbeat per minute

• The oxygen level in the blood

What happens to blood vessels during vasoconstriction?

• Blood pressure decreases

• Blood pressure increases

• Heart rate slows down

• Oxygen supply stops

Why is the regulation of blood pressure important?

• It helps the heart beat faster

• It maintains a constant supply of oxygen and nutrients

• It increases the size of blood vessels

• It prevents the heart from relaxing

What is the main function of the atrioventricular valves in the heart?

• To prevent backflow of blood from ventricles to atria

• To pump blood into the arteries

• To regulate oxygen exchange

• To control heart rate

Which of the following best represents systolic blood pressure?

• The pressure when the heart relaxes between beats

• The pressure when the ventricles contract

• The pressure in the veins

• The pressure in the capillaries

Arrange the phases of the cardiac cycle in the correct order.

• Atrial systole → Ventricular systole → Diastole

• Diastole → Ventricular systole → Atrial systole

• Ventricular systole → Diastole → Atrial systole

• Diastole → Atrial systole → Ventricular systole

If a patient’s blood pressure is measured as 140/90 mmHg, which number represents the diastolic pressure?

• 140 mmHg

• 90 mmHg

• Both numbers

• Neither number

Why does blood pressure drop in arterioles and capillaries compared to arteries?

• Because the blood moves faster in arterioles and capillaries

• Because the total cross-sectional area increases

• Because the heart stops pumping

• Because oxygen is added to the blood