Q1. Which component of blood helps in the transport of CO₂?A. PlasmaB. PlateletsC. ErythrocytesD. Leukocytes
Q2. Which of the following statements about blood pressure is incorrect?A. Systolic pressure is the pressure exerted when the ventricles contract.B. Diastolic pressure occurs when the heart relaxes.C. A normal blood pressure reading is 90/60 mmHg.D. Blood pressure is measured using a sphygmomanometer.
Q3. Which of the following statements about the pericardium is correct?A. It is a muscular layer of the heart.B. It generates electrical impulses.C. It reduces friction between the heart and surrounding structures.D. It pumps blood into the aorta.
Q4. Which of the following is correct about the cardiac cycle?A. The cardiac cycle lasts approximately 2 seconds.B. Systole refers to heart muscle relaxation.C. The cardiac cycle consists of systole and diastole.D. Diastole occurs when the heart contracts.
Q5. Which of the following prevents backflow of blood in veins?A. CapillariesB. ValvesC. EndotheliumD. Smooth muscle
Q6. Which term describes the contraction of the heart chambers?A. DiastoleB. SystoleC. RepolarizationD. Depolarization
Q7. Which plasma protein is primarily responsible for blood clotting?A. AlbuminB. GlobulinC. FibrinogenD. Collagen
Q8. Which of the following heart valves is also known as the mitral valve?A. Tricuspid valveB. Pulmonary valveC. Aortic valveD. Bicuspid valve
Q9. What is the term for the relaxation phase of the heart?A. SystoleB. DiastoleC. DepolarizationD. Repolarization
Q10. Which statement about the heart sounds is correct?A. The "Lub" sound is caused by the closure of the semilunar valves.B. The "Dub" sound is due to the closure of the AV valves.C. The "Lub" sound is caused by the closure of the AV valves.D. Both sounds occur simultaneously.