Free Cardiovascular System MCQs with Answers
40 Cardiovascular System MCQs from Anatomy and Physiology for Nursing, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
The cardiovascular system covers the chambers, valves and major vessels of the heart, the cardiac cycle, conduction pathway, blood pressure and the circulation through pulmonary and systemic circuits. It also explains artery, vein and capillary structure, exchange at capillary beds, and how the cardiac cycle differs from general blood flow.
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40 questions · page 1 of 2
- A. Right atrium
- B. Right ventricle
- C. Left atrium
- D. Left ventricle
Explanation: The left atrium receives oxygenated blood from the four pulmonary veins and passes it through the mitral valve to the left ventricle.
Correct answer: Left atrium- A. Tricuspid valve
- B. Pulmonary valve
- C. Mitral valve
- D. Aortic valve
Explanation: The mitral valve lies between the left atrium and left ventricle and closes when the ventricle contracts.
Correct answer: Mitral valve- A. AV node, SA node, Purkinje fibres, bundle branches
- B. SA node, AV node, bundle of His, Purkinje fibres
- C. SA node, bundle branches, AV node, Purkinje fibres
- D. AV node, bundle of His, SA node, Purkinje fibres
Explanation: The impulse normally begins in the sinoatrial node, reaches the atrioventricular node, travels through the bundle of His and bundle…
Correct answer: SA node, AV node, bundle of His, Purkinje fibres- A. 20 mmHg
- B. 40 mmHg
- C. 80 mmHg
- D. 120 mmHg
Explanation: Pulse pressure is calculated by subtracting diastolic pressure from systolic pressure: 120 minus 80 equals 40 mmHg.
Correct answer: 40 mmHg- A. Left ventricle, aorta, lungs, left atrium
- B. Right ventricle, pulmonary artery, lungs, left atrium
- C. Left ventricle, pulmonary artery, lungs, right atrium
- D. Right ventricle, aorta, lungs, right atrium
Explanation: The right ventricle pumps deoxygenated blood through the pulmonary artery to the lungs, where gas exchange occurs.
Correct answer: Right ventricle, pulmonary artery, lungs, left atrium- A. It starts every heartbeat in the ventricles
- B. It delays the impulse before ventricular contraction
- C. It carries oxygenated blood to the myocardium
- D. It prevents blood from entering the pulmonary artery
Explanation: The AV node delays conduction between atrial and ventricular depolarisation, allowing time for ventricular filling.
Correct answer: It delays the impulse before ventricular contraction- A. Increased venous return and increased stroke volume
- B. Reduced venous return and reduced cardiac output
- C. Reduced heart rate and increased cardiac output
- D. Increased capillary filtration and increased blood pressure
Explanation: Blood loss reduces circulating volume, so less blood returns to the heart and cardiac output falls.
Correct answer: Reduced venous return and reduced cardiac output- A. An artery has thinner walls and valves
- B. An artery carries blood only toward the lungs
- C. An artery has a thicker muscular wall and smaller lumen
- D. An artery allows most fluid exchange with tissues
Explanation: Arteries carry blood away from the heart under higher pressure, so they have thicker muscular and elastic walls with relatively smaller…
Correct answer: An artery has a thicker muscular wall and smaller lumen9. At the arterial end of a normal capillary bed, which force mainly pushes fluid out of the capillary?
- A. Capillary hydrostatic pressure
- B. Plasma osmotic pressure
- C. Lymphatic suction pressure
- D. Intercellular osmotic pressure
Explanation: Capillary hydrostatic pressure pushes water and small solutes out into the tissue spaces at the arterial end.
Correct answer: Capillary hydrostatic pressure- A. 0.5 L/min
- B. 5.0 L/min
- C. 50.4 L/min
- D. 142 L/min
Explanation: Cardiac output equals heart rate multiplied by stroke volume: 72 × 70 mL equals 5,040 mL per minute, or approximately 5.0 L/min.
Correct answer: 5.0 L/min- A. Right atrium
- B. Right ventricle
- C. Left atrium
- D. Left ventricle
Explanation: The right ventricle ejects deoxygenated blood through the pulmonary valve into the pulmonary artery.
Correct answer: Right ventricle- A. Tricuspid valve
- B. Pulmonary valve
- C. Mitral valve
- D. Aortic valve
Explanation: The aortic valve is a semilunar valve between the left ventricle and the aorta.
Correct answer: Aortic valve- A. The ventricles relax and fill with blood
- B. The semilunar valves open and blood leaves
- C. The atria contract and eject into arteries
- D. The ventricles contract and raise arterial pressure
Explanation: During ventricular diastole, the ventricles relax and fill from the atria.
Correct answer: The ventricles relax and fill with blood- A. Coronary artery
- B. Pulmonary artery
- C. Superior vena cava
- D. Coronary sinus
Explanation: The coronary arteries branch from the aorta and deliver oxygenated blood to the myocardium.
Correct answer: Coronary artery- A. Reduced peripheral resistance
- B. Increased venous pooling
- C. Increased peripheral resistance
- D. Reduced arterial pressure from vasodilation
Explanation: Arteriolar constriction decreases the vessel radius and increases peripheral resistance, which tends to raise arterial pressure.
Correct answer: Increased peripheral resistance- A. Elastic arteries
- B. Arterioles
- C. Capillaries
- D. Large veins
Explanation: Capillaries have very thin walls, usually one endothelial cell layer, allowing diffusion and filtration.
Correct answer: Capillaries- A. Reduced pressure in pulmonary capillaries
- B. Increased pulmonary venous pressure
- C. Obstruction of the superior vena cava
- D. Reduced blood flow through the pulmonary artery
Explanation: Poor left ventricular pumping causes blood to back up into the pulmonary veins and capillaries.
Correct answer: Increased pulmonary venous pressure- A. The cardiac cycle includes atrial and ventricular contraction and relaxation
- B. The cardiac cycle describes only blood movement through capillaries
- C. Systemic circulation occurs only when the ventricles are relaxed
- D. Pulmonary circulation begins when the left atrium contracts
Explanation: The cardiac cycle is the sequence of atrial and ventricular systole and diastole during one heartbeat.
Correct answer: The cardiac cycle includes atrial and ventricular contraction and relaxation- A. Warm skin and a regular pulse
- B. Urine output of 15 mL in one hour
- C. Mild thirst after a meal
- D. Capillary refill of two seconds
Explanation: Urine output of 15 mL in one hour suggests reduced renal perfusion and possible inadequate circulating volume.
Correct answer: Urine output of 15 mL in one hour20. Which chamber of the heart receives deoxygenated blood from the superior and inferior venae cavae?
- A. Right atrium
- B. Right ventricle
- C. Left atrium
- D. Left ventricle
Explanation: The right atrium receives deoxygenated blood returning from the body through the venae cavae.
Correct answer: Right atriumCardiovascular System MCQs: common questions
Are these Cardiovascular System MCQs free?
Yes. All Cardiovascular System MCQs from Anatomy and Physiology for Nursing are free on TestUstad, with unlimited attempts and no account needed. Nothing on this page is a sample or a trial.
How many Cardiovascular System MCQs are on this page?
There are 40 Cardiovascular System MCQs in the Anatomy and Physiology for Nursing bank, shown ten to a page with the correct answer and an explanation on each.
Does every Cardiovascular System MCQ have an explanation?
Yes. Each Cardiovascular System question shows the correct option and a written explanation of why it is correct, so a wrong answer teaches you something rather than just being marked wrong.
Can I take a timed Cardiovascular System test?
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