Cardiovascular System Quiz
Test your knowledge of the Cardiovascular System
Quiz Information
Description:
Test your knowledge of the heart and blood vessels.
Instructions:
- Read each question carefully before selecting your answer.
- Each question has one correct answer.
- You will receive immediate feedback after answering each question.
- Your final score will be displayed at the end of the quiz.
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This quiz will test your understanding of the Cardiovascular System system anatomy. Make sure you're ready to begin!
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Q1: What is the function of the pulmonary valve?
- Prevents backflow into left atrium
- Prevents backflow into right ventricle
- Prevents backflow into left ventricle
- Prevents backflow into right atrium
Q2: Which vessel supplies the brain with oxygenated blood?
- Jugular vein
- Subclavian artery
- Carotid artery
- Pulmonary vein
Q3: Which vein returns blood from the lower body?
- Superior vena cava
- Jugular vein
- Inferior vena cava
- Femoral vein
Q4: Which vessel carries oxygenated blood from the lungs to the heart?
- Pulmonary artery
- Aorta
- Pulmonary vein
- Superior vena cava
Q5: Which heart valve is located between the right atrium and right ventricle?
- Mitral valve
- Pulmonary valve
- Aortic valve
- Tricuspid valve
Q6: What causes the “lub-dub” sound of the heartbeat?
- Blood movement in veins
- Opening of valves
- Closing of valves
- Pulse in arteries
Q7: Which structure is responsible for spreading electrical signals in ventricles?
- AV node
- SA node
- Purkinje fibers
- Aorta
Q8: Which blood component transports oxygen?
- Plasma
- Platelets
- Leukocytes
- Erythrocytes
Q9: What is atherosclerosis?
- Low red blood cell count
- Valve dysfunction
- Hardening of arteries due to plaque
- Irregular heartbeat
Q10: What is systole?
- Relaxation of the heart
- Contraction of the heart
- Filling of atria
- Opening of valves
Q11: Which term describes a rapid heartbeat?
- Bradycardia
- Tachycardia
- Fibrillation
- Murmur
Q12: What valve is located between the left atrium and left ventricle?
- Tricuspid valve
- Aortic valve
- Pulmonary valve
- Mitral valve
Q13: What is hematocrit?
- Oxygen saturation
- Percentage of RBCs in blood
- Clotting time
- Heart rate
Q14: Which blood vessels carry blood away from the heart?
- Arteries
- Veins
- Capillaries
- Venules
Q15: Which of the following increases blood pressure?
- Vasodilation
- Dehydration
- Bradycardia
- Vasoconstriction
Q16: Which part of the ECG corresponds to ventricular contraction?
- P wave
- QRS complex
- T wave
- U wave
Q17: Which part of the heart pumps blood to the lungs?
- Left atrium
- Right atrium
- Right ventricle
- Left ventricle
Q18: Which side of the heart handles oxygenated blood?
- Right side
- Left side
- Both sides
- Neither side
Q19: Which hormone increases heart rate?
- Insulin
- Adrenaline
- Thyroxine
- Glucagon
Q20: Which blood type is the universal recipient?
- O
- A
- B
- AB
Q21: What is the thick middle layer of the heart wall?
- Endocardium
- Epicardium
- Myocardium
- Pericardium
Q22: Which node initiates the electrical impulse in the heart?
- AV node
- SA node
- Bundle of His
- Purkinje fibers
Q23: What is the largest artery in the body?
- Carotid artery
- Aorta
- Femoral artery
- Subclavian artery
Q24: What is the function of capillaries?
- Carry blood away from heart
- Exchange gases and nutrients
- Store blood
- Prevent blood loss
Q25: What is the function of the pericardium?
- Contract the heart
- Protect the heart
- Conduct impulses
- Oxygenate blood
Q26: Which vein drains blood from the brain?
- Basilic vein
- Jugular vein
- Subclavian vein
- Femoral vein
Q27: Which blood vessels have valves?
- Arteries
- Capillaries
- Veins
- Arterioles
Q28: Which structure anchors heart valves to heart walls?
- Chordae tendineae
- Sinoatrial node
- Intercalated discs
- Coronary sulcus
Q29: Which structure prevents blood from flowing backward into the atria?
- Aortic valve
- Semilunar valves
- AV valves
- Sinoatrial node
Q30: Which component of blood helps in clotting?
- Plasma
- Red blood cells
- Platelets
- White blood cells
Q31: Which structure delivers electrical signals from atria to ventricles?
- SA node
- AV node
- Aortic arch
- Bundle of His
Q32: Which blood type is the universal donor?
- A
- B
- AB
- O
Q33: Which chamber of the heart receives oxygen-poor blood from the body?
- Left atrium
- Right atrium
- Left ventricle
- Right ventricle
Q34: Which artery supplies the heart muscle with blood?
- Coronary artery
- Pulmonary artery
- Carotid artery
- Subclavian artery
Q35: What do the semilunar valves do?
- Prevent backflow into atria
- Separate the atria
- Prevent backflow into ventricles
- Transmit electrical signals
Q36: Which ion is most important for cardiac muscle contraction?
- Potassium
- Chloride
- Sodium
- Calcium
Q37: Which blood cells are primarily involved in immune defense?
- Red blood cells
- Platelets
- White blood cells
- Plasma
Q38: What does ECG stand for?
- Echo Cardio Guide
- Electrocardiogram
- Electrochemogram
- Echo Calcium Graph
Q39: Which chamber pumps blood into the aorta?
- Right ventricle
- Left ventricle
- Left atrium
- Right atrium
Q40: Which part of the brain regulates heart rate?
- Cerebellum
- Cerebrum
- Medulla oblongata
- Thalamus
Q41: Which organ is responsible for recycling old red blood cells?
- Liver
- Spleen
- Kidney
- Lungs
Q42: Which phase of the cardiac cycle occurs when the heart fills with blood?
- Systole
- Diastole
- Contraction
- Pulse
Q43: Which vessel carries blood to the heart muscle?
- Pulmonary vein
- Coronary artery
- Hepatic portal vein
- Jugular vein
Q44: Where is the heart located?
- Left upper abdomen
- Center of the chest
- Right thorax
- Posterior mediastinum
Q45: Which of the following is a symptom of myocardial infarction?
- Sneezing
- Back pain
- Chest pain
- Skin rash
Q46: What is the normal resting heart rate for adults?
- 30–50 bpm
- 60–100 bpm
- 100–120 bpm
- 120–150 bpm
Q47: What is the primary function of red blood cells?
- Fight infections
- Transport oxygen
- Form clots
- Regulate temperature
Q48: What is blood pressure a measure of?
- Muscle tension
- Rate of heartbeats
- Force of blood on vessel walls
- Oxygen content in blood
Q49: Which blood vessel carries blood from the heart to the lungs?
- Pulmonary vein
- Aorta
- Pulmonary artery
- Superior vena cava
Q50: Which part of the heart has the thickest walls?
- Right atrium
- Left atrium
- Right ventricle
- Left ventricle