This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 467 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 467 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Oxygen enters our blood in the lungs by the process of? A) Photosynthesis. B) Cellular respiration. C) Diffusion. D) Air pressure. Show Answer Correct Answer: C) Diffusion. 2. These blood vessels have a large diameter and a thick muscle wall A) Arteries. B) Veins. C) Atria. D) Capillaries. Show Answer Correct Answer: A) Arteries. 3. The aorta takes blood from the ..... to the body. A) Right atrium. B) Left atrium. C) Right ventricle. D) Left ventricle. Show Answer Correct Answer: D) Left ventricle. 4. Transporting metabolic waste. This includes..... A) Blood function (6). B) Blood components. Show Answer Correct Answer: A) Blood function (6). 5. Heart has ..... chambers A) 4. B) 6. C) 2. D) 3. Show Answer Correct Answer: A) 4. 6. Hemophilia is due to an excess of clotting proteins that are naturally found in the blood A) True. B) False. Show Answer Correct Answer: B) False. 7. Nodes are responsible for the electrical conduction or current that runs through the heart to make it contract. A) True. B) False. C) . D) . Show Answer Correct Answer: A) True. 8. Which muscles are used for closure of Atrio-Ventricular Valve? A) Chords Tendons. B) Valve Muscles. C) Papillary Muscles. D) None of the above. Show Answer Correct Answer: C) Papillary Muscles. 9. The upper limit of blood pressure is- A) 150 mm Hg. B) 200 mm Hg. C) 120 mm Hg. D) 380 mm Hg. Show Answer Correct Answer: C) 120 mm Hg. 10. The path of blood flow within the systemic vascular system is: A) Arterioles, arteries, capillary beds, venules, veins. B) Arteries, arterioles, capillary beds, veins, venules. C) Arteries, arterioles, capillary beds, venules, veins. D) Arterioles, arteries, capillary beds, veins, venules. Show Answer Correct Answer: C) Arteries, arterioles, capillary beds, venules, veins. 11. Pumping blood throughout the body is the function of..... A) Blood vessel. B) Heart. Show Answer Correct Answer: B) Heart. 12. What are the flaps of tissue found in veins, that prevent blood from flowing backward. A) Valves. B) Platelets. C) Ventricle. D) Antibodies. Show Answer Correct Answer: A) Valves. 13. Recall which type of blood cell carries oxygen A) Red blood cells. B) Plasma. C) Platelets. D) White blood cells. Show Answer Correct Answer: A) Red blood cells. 14. The ..... of the heart control the flow of blood through the heart by opening and closing during contractions A) Valves. B) Aorta. C) Vena cava. D) Lungs. Show Answer Correct Answer: A) Valves. 15. What is the structure in the heart of the mammals and birds that prevent mixing of oxygenated and deoxygenated blood? A) Septum. B) Arteries. C) Capillaries. D) Valve. Show Answer Correct Answer: A) Septum. 16. The number of times the heart beats in a certain amount of time, usually a minute is: A) Beat rate. B) Heart rate. C) Blood flow rate. D) Pulmonary rate. Show Answer Correct Answer: B) Heart rate. 17. Structure that separates the superior and inferior chambers of the heart A) Atrioventricular valves. B) Pulmonary valves. C) Aortic valves. D) Septum. Show Answer Correct Answer: A) Atrioventricular valves. 18. All vertebrates have a closed circulatory system A) True. B) False. Show Answer Correct Answer: A) True. 19. What is the purpose of the Rh grouping system in blood typing? A) Determining blood pressure. B) Determining blood volume. C) Determining blood type. D) Determining blood clotting. Show Answer Correct Answer: C) Determining blood type. 20. Inferior tip of the heart A) Atria. B) Ventricle. C) Pericardium. D) Apex. Show Answer Correct Answer: D) Apex. ← 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