Q1. Which part of the ECG represents atrial depolarization?A. P waveB. QRS complexC. T waveD. ST segment
Q2. Which of the following is responsible for maintaining blood osmotic pressure?A. FibrinogenB. AlbuminC. GlobulinD. Hemoglobin
Q3. Which of the following statements about blood plasma is incorrect?A. Plasma makes up about 55% of total blood volume.B. Plasma contains water, proteins, and dissolved substances.C. Plasma plays no role in immune response.D. Plasma helps in the transport of nutrients and hormones.
Q4. Which of the following statements about blood composition is incorrect?A. Blood consists of plasma and formed elements.B. Leukocytes are responsible for transporting oxygen.C. Platelets play a role in blood clotting.D. Plasma contains water, proteins, and electrolytes.
Q5. Which of the following is incorrect about the functions of the lymphatic system?A. It helps in the absorption of fats from the intestine.B. It plays a role in the body's immune defense.C. It transports oxygen and carbon dioxide in the body.D. It drains excess interstitial fluid from tissues.
Q6. Which valve prevents backflow of blood into the left atrium?A. Tricuspid valveB. Bicuspid valveC. Semilunar valveD. Mitral valve
Q7. Which condition is caused by the narrowing of coronary arteries due to plaque buildup?A. AneurysmB. AtherosclerosisC. Varicose veinsD. Leukemia
Q8. Which of the following statements is incorrect regarding blood groups?A. Blood group O is the universal donor.B. Blood group AB is the universal recipient.C. Blood grouping is based on the presence of antigens A and B.D. Rh-negative individuals can receive Rh-positive blood without any reaction.
Q9. Which type of circulation carries blood between the heart and lungs?A. Systemic circulationB. Coronary circulationC. Pulmonary circulationD. Hepatic portal circulation
Q10. Which ion plays a key role in muscle contraction, including that of the heart?A. Sodium (Na⁺)B. Potassium (K⁺)C. Calcium (Ca²⁺)D. Magnesium (Mg²⁺)