Q1: 1. Which of the following is not a component of blood?

• A) Platelets
• B) Lymphocytes
• C) Insulin
• D) Erythrocytes

Q2: 2. What is the function of red blood cells?

• A) Fight infection
• B) Transport oxygen
• C) Produce antibodies
• D) Aid in blood clotting

Q3: 3. Which of the following is not a part of the lymphatic system?

• A) Lymph nodes
• B) Spleen
• C) Pancreas
• D) Thymus

Q4: 4. Blood pressure is highest in which of the following blood vessels?

• A) Arteries
• B) Veins
• C) Capillaries
• D) Venules

Q5: 5. Which of the following hormones regulates water balance in the body?

• A) Insulin
• B) Thyroxine
• C) ADH (Antidiuretic Hormone)
• D) Cortisol

Q6: 6. Where does the exchange of gases occur in the circulatory system?

• A) Aorta
• B) Pulmonary artery
• C) Pulmonary vein
• D) Capillaries

Q7: 7. What is the main function of the lymphatic system?

• A) Transport nutrients
• B) Fight infection
• C) Produce hormones
• D) Regulate body temperature

Q8: 8. Which of the following is a major component of plasma?

• A) Red blood cells
• B) White blood cells
• C) Platelets
• D) Water

Q9: 9. What is the function of platelets in the blood?

• A) Transport oxygen
• B) Fight infection
• C) Blood clotting
• D) Produce antibodies

Q10: 10. Which of the following is not a major blood group system?

• A) ABO system
• B) Rh system
• C) MNS system
• D) Lymph system

Q11: 11. Which of the following hormones is released by the adrenal glands in response to stress?

• A) Insulin
• B) Epinephrine
• C) Thyroxine
• D) Estrogen

Q12: 12. What is the primary function of the heart in the circulatory system?

• A) Filter blood
• B) Pump blood
• C) Store blood
• D) Produce blood cells

Q13: 13. Which of the following is not a type of blood vessel in the circulatory system?

• A) Artery
• B) Vein
• C) Capillary
• D) Lymphocyte

Q14: 14. What is the average pH of blood in the human body?

• A) 6.0
• B) 7.0
• C) 7.4
• D) 8.0

Q15: 15. Which of the following is not a function of the kidneys in the body?

• A) Filter waste products
• B) Regulate blood pressure
• C) Produce bile
• D) Maintain electrolyte balance

Q16: 16. What is the role of hemoglobin in red blood cells?

• A) Transport carbon dioxide
• B) Fight infection
• C) Transport oxygen
• D) Produce antibodies

Q17: 17. Which of the following is not a component of the lymphatic system?

• A) Tonsils
• B) Appendix
• C) Thymus
• D) Adrenal glands

Q18: 18. What is the function of lymphocytes in the immune system?

• A) Produce antibodies
• B) Transport oxygen
• C) Aid in blood clotting
• D) Regulate body temperature

Q19: 19. Which of the following is not a type of white blood cell?

• A) Neutrophil
• B) Eosinophil
• C) Basophil
• D) Thrombocyte

Q20: 20. What is the function of the spleen in the body?

• A) Produce red blood cells
• B) Filter blood
• C) Regulate body temperature
• D) Produce insulin

Q21: 21. Which of the following is not a function of blood in the body?

• A) Transport nutrients
• B) Regulate body temperature
• C) Fight infection
• D) Produce bile

Q22: 22. What is the main function of the lymph nodes in the lymphatic system?

• A) Produce hormones
• B) Store excess water
• C) Filter lymph
• D) Regulate blood pressure

Q23: 23. Which of the following is a characteristic of veins in the circulatory system?

• A) Carry oxygen-rich blood
• B) Have thick walls
• C) Transport blood away from the heart
• D) Contain valves

Q24: 24. What is the role of the thymus gland in the immune system?

• A) Produce hormones
• B) Filter blood
• C) Store excess water
• D) Produce T-lymphocytes

Q25: 25. Which of the following is not a component of blood plasma?

• A) Water
• B) Proteins
• C) Platelets
• D) Electrolytes