Free Test Circulation – NEET

Q1: What is the normal resting heart rate of a healthy adult human?

A. 60–100 beats/min B. 40–60 beats/min C. 100–120 beats/min D. 120–140 beats/min

Q2: Which chamber of the human heart receives oxygenated blood from the lungs?

A. Right atrium B. Left atrium C. Right ventricle D. Left ventricle

Q3: Which blood vessels carry blood away from the heart?

A. Veins B. Arteries C. Capillaries D. Venules

Q4: What is the function of hemoglobin?

A. Clotting of blood B. Oxygen transport C. Immune defense D. Digestion

Q5: Which of the following is the largest artery in the human body?

A. Pulmonary artery B. Aorta C. Coronary artery D. Carotid artery

Q6: Which blood group is called the universal recipient?

A. A B. B C. AB D. O

Q7: Which node acts as the pacemaker of the heart?

A. AV Node B. SA Node C. Bundle of His D. Purkinje fibers

Q8: What causes the lub-dub sound of the heart?

A. Heart muscles relaxing B. Opening of valves C. Closing of valves D. Blood rushing into atria

Q9: Which component of blood helps in clotting?

A. RBC B. WBC C. Platelets D. Plasma

Q10: Which vessel carries deoxygenated blood from the heart to the lungs?

A. Pulmonary artery B. Pulmonary vein C. Aorta D. Vena cava

Q11: What is the lifespan of red blood cells?

A. 30 days B. 60 days C. 90 days D. 120 days

Q12: Which valve is present between the left atrium and left ventricle?

A. Tricuspid valve B. Pulmonary valve C. Bicuspid valve D. Aortic valve

Q13: What is cardiac output?

A. Heart rate × Blood pressure B. Stroke volume × Heart rate C. Stroke volume ÷ Heart rate D. Heart rate + Stroke volume

Q14: Which vein carries oxygenated blood?

A. Pulmonary vein B. Vena cava C. Jugular vein D. Hepatic vein

Q15: Which of the following is not a formed element in blood?

A. RBCs B. WBCs C. Platelets D. Plasma

Q16: What is hypertension?

A. Low blood sugar B. Low blood pressure C. High blood pressure D. High cholesterol

Q17: Which blood group is called the universal donor?