Q2. Which heart condition occurs when blood supply to the heart muscle is reduced?A. ArrhythmiaB. HypertensionC. Angina pectorisD. Bradycardia
Q3. Which of the following statements about ECG is incorrect?A. ECG records the electrical activity of the heart.B. The P-wave represents ventricular contraction.C. The QRS complex represents ventricular depolarization.D. The T-wave represents ventricular repolarization.
Q4. Which of the following statements about the SA node is correct?A. It is located in the left atrium.B. It generates electrical impulses that regulate heartbeat.C. It delays impulses before they reach the ventricles.D. It is also known as the AV node.
Q5. Which of the following statements about blood pressure is correct?A. Systolic pressure occurs when the heart relaxes.B. Diastolic pressure is the highest pressure in the arteries.C. Blood pressure is measured using a sphygmomanometer.D. Normal blood pressure is 150/100 mmHg.
Q6. Which of the following is incorrect regarding white blood cells?A. Neutrophils are the most abundant type of WBCs.B. Lymphocytes produce antibodies.C. Basophils play a role in allergic reactions.D. Erythrocytes are a type of WBC.
Q7. Which component of blood helps maintain body temperature?A. PlasmaB. LeukocytesC. PlateletsD. Erythrocytes
Q8. Which disorder is characterized by a lack of platelets?A. AnemiaB. LeukopeniaC. ThrombocytopeniaD. Polycythemia
Q9. Which statement about the pulmonary circulation is correct?A. It carries oxygenated blood from the lungs to the heart.B. It transports oxygenated blood to the body tissues.C. It carries deoxygenated blood from the left ventricle.D. It involves the aorta and systemic veins.
Q10. Which blood vessel carries oxygenated blood to the body?A. Pulmonary veinB. Pulmonary arteryC. AortaD. Vena cava