This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 136 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 136 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. If a person does not have enough erythrocytes, he/she would have difficulty: A) Fighting infection. B) Carrying oxygen. C) Clotting the blood. D) Transporting antibodies. Show Answer Correct Answer: B) Carrying oxygen. 2. The layer of the heart that forms a smooth, protective lining of the heart chambers and valves is the ..... A) Endocardium. B) Myocardium. C) Epicardium. D) Parietal pericardium. Show Answer Correct Answer: A) Endocardium. 3. This part of the heart receives oxygenated blood from the lungs. A) Left Atrium. B) Right atrium. C) Left Ventricle. D) Right Ventricle. Show Answer Correct Answer: A) Left Atrium. 4. The average rate of heartbeat is about ..... per minute. A) 70 times. B) 80 times. C) 90 times. D) 100 times. Show Answer Correct Answer: A) 70 times. 5. Left ventricle forms A) Apex of the heart. B) Pizza heart. C) Skin of heart. D) None of above. Show Answer Correct Answer: A) Apex of the heart. 6. The ..... is the key organ of the circulatory system. A) Lungs. B) Skin. C) Heart. D) Stomach. Show Answer Correct Answer: C) Heart. 7. ..... blood cells give blood its colour. They carry oxygen and carbon dioxide. A) Red. B) White. C) Platelets. D) None of above. Show Answer Correct Answer: A) Red. 8. The red blood cells transport A) Glucose. B) Yes. C) O2. D) Ill. Show Answer Correct Answer: C) O2. 9. Semilunar A) Heart wall (3). B) Heart room. C) Heart valves (3). D) Cardiac nerves (3). Show Answer Correct Answer: C) Heart valves (3). 10. What should be reduced to avoid a sedentary lifestyle? A) Time spent sitting in front of the TV or computer. B) Physical exercise. C) Healthy eating habits. D) Sleeping hours. Show Answer Correct Answer: A) Time spent sitting in front of the TV or computer. 11. The combining form for a clot or thrombus is: A) Arteri/o. B) Card. C) Welcome. D) Thromb/o. Show Answer Correct Answer: D) Thromb/o. 12. Large lymphatic trunks where thin lymphatic vessels gradually converge. A) Lymphatic vessels. B) Lymphatic ducts. C) Lymphatic capillaries. D) None of above. Show Answer Correct Answer: B) Lymphatic ducts. 13. As blood passes through the capillaries, water and dissolved substances (oxygen, amino acids, simple sugars, and others) filters through the capillary walls forming what is known as ..... A) Blood vessels. B) Platelets. C) Tissue fluid. D) Nodes. Show Answer Correct Answer: C) Tissue fluid. 14. These blood vessels carry deoxygenated blood back to the heart. A) Arteries. B) Veins. C) Capillaries. D) None of above. Show Answer Correct Answer: B) Veins. 15. Human beings have a well developed specialized system to transport ....., gases and ..... A) Nutrients, harmonium. B) Nutrients, hormones. C) Nut, hair. D) Nutrients, oxygen. Show Answer Correct Answer: B) Nutrients, hormones. 16. Nails are made out of what? A) All of the Above. B) Terminal. C) Vellus. D) Keratin. Show Answer Correct Answer: D) Keratin. 17. Which process is employed during exchange of gases A) Osmosis. B) Diffusion. C) Thermographic respiration. D) Respiration. Show Answer Correct Answer: B) Diffusion. 18. Is the volume of blood pumped out of the ventricle in a minute A) Cardiac Cycle. B) Heart Rate. C) Stroke Volume. D) Cardiac Output. Show Answer Correct Answer: D) Cardiac Output. 19. Transporting food and oxygen This includes..... A) Blood function (6). B) Blood components. Show Answer Correct Answer: A) Blood function (6). 20. Adaptations of the circulatory system include ..... A) Heart location for protection. B) Arteries have thick walls. C) Capillaries are thin. D) All are adaptations. Show Answer Correct Answer: D) All are adaptations. ← PreviousNext →Related QuizzesScience QuizzesCirculatory System Quiz 1Circulatory System Quiz 2Circulatory System Quiz 3Circulatory System Quiz 4Circulatory System Quiz 5Circulatory System Quiz 6Circulatory System Quiz 7Circulatory System Quiz 8Circulatory System Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books