Cardiac Cycle and Blood Pressure: Interactive Learning Quizzes

Question 1

Which of the following is **not** a phase of the cardiac cycle?

Accepted Answer

Ventricular diastasis

Answer

Atrial systole

Answer

Ventricular ejection

Answer

Isovolumetric relaxation

Question 2

Which of the following is **not** a consequence of increased peripheral resistance?

Accepted Answer

Faster heart rate

Answer

Increased blood pressure

Answer

Decreased cardiac output

Answer

Reduced stroke volume

Question 3

Which chamber of the heart has the **thickest** myocardium?

Accepted Answer

Left ventricle

Answer

Right atrium

Answer

Left atrium

Answer

Right ventricle

Question 4

What is the **primary** role of the coronary arteries?

Accepted Answer

Supply blood to the heart muscle

Answer

Receive blood from the heart muscle

Answer

Regulate heart rate

Answer

Control blood pressure

Question 5

During the atrial systole phase of the cardiac cycle, the:

Accepted Answer

Atria contract, pushing blood into the ventricles

Answer

Ventricles contract, pushing blood out of the heart

Answer

Atrioventricular valves close

Answer

Semilunar valves open

Question 6

The normal systolic blood pressure range for an adult at rest is:

Accepted Answer

90-120 mmHg

Answer

120-140 mmHg

Answer

140-160 mmHg

Answer

160-180 mmHg

Question 7

Which factor does NOT increase heart rate during exercise?

Accepted Answer

Increased blood pH

Answer

Increased sympathetic nervous system activity

Answer

Increased body temperature

Answer

Increased oxygen demand

Question 8

The primary function of the cardiovascular system is to:

Accepted Answer

Transport oxygen and nutrients to cells

Answer

Regulate body temperature

Answer

Remove waste products from the body

Answer

Protect the body from infection

Question 9

The relaxation phase of the cardiac cycle is known as:

Accepted Answer

Diastole

Answer

Systole

Answer

Ischemia

Answer

Hypertrophy

Question 10

The sinoatrial node (SA node) in the cardiac cycle:

Accepted Answer

Initiates the electrical impulse for the heartbeat

Answer

Regulates the rate of heart contraction

Answer

Controls valve opening and closing

Answer

Pumps blood out of the ventricles

Question 11

The blood vessel that carries oxygenated blood away from the heart is the:

Accepted Answer

Aorta

Answer

Pulmonary artery

Answer

Vena cava

Answer

Pulmonary vein

Question 12

Which blood vessel type has the strongest and thickest walls?

Accepted Answer

Arteries

Answer

Veins

Answer

Capillaries

Answer

Lymphatic vessels

Question 13

What physiological parameter measures the force exerted by blood against blood vessel walls?

Accepted Answer

Blood pressure

Answer

Cardiac output

Answer

Blood volume

Answer

Stroke volume

Question 14

Which of the following is not a primary function of the cardiovascular system?

Accepted Answer

Red blood cell production

Answer

Nutrient and oxygen transport

Answer

Waste removal

Answer

Body temperature regulation

Question 15

What is the typical range of mean arterial pressure (MAP) for a healthy adult?

Accepted Answer

90-100 mmHg

Answer

80-90 mmHg

Answer

100-110 mmHg

Answer

110-120 mmHg

Question 16

Which hormone stimulates increased blood pressure by influencing the arterioles?

Accepted Answer

Epinephrine

Answer

Insulin

Answer

Testosterone

Answer

Progesterone

Question 17

What distinguishes systolic blood pressure from diastolic blood pressure?

Accepted Answer

Systolic pressure is the maximum pressure during a heartbeat cycle, while diastolic pressure is the minimum pressure.

Answer

Systolic pressure is the minimum pressure during a heartbeat cycle, while diastolic pressure is the maximum pressure.

Answer

Systolic and diastolic pressures are always equal.

Answer

Systolic pressure is the right ventricular pressure, while diastolic pressure is the left ventricular pressure.

Question 18

Which phase of the cardiac cycle is characterized by the active contraction of the ventricles, pumping blood out of the heart?

Accepted Answer

Systole

Answer

Diastole

Answer

Atrial systole

Answer

Isovolumetric relaxation

Question 19

Which of the following pressure measurements represents the highest point in the cardiac cycle?

Accepted Answer

Systolic pressure

Answer

Mean arterial pressure

Answer

Pulmonary artery pressure

Answer

Diastolic pressure

Question 20

Which type of blood vessel possesses the thickest walls and the narrowest lumens?

Accepted Answer

Arteries

Answer

Lymphatic vessels

Answer

Veins

Answer

Capillaries

Question 21

What is the primary role of the sinoatrial (SA) node in the cardiac cycle?

Accepted Answer

Initiating and generating electrical impulses that cause the heart to beat

Answer

Controlling the contraction of the ventricles

Answer

Preventing backflow of blood into the atria

Question 22

What is the primary function of the heart valves?

Accepted Answer

To prevent the backflow of blood during the cardiac cycle

Answer

To regulate heart rate

Answer

To generate electrical impulses