This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Biology > Circulatory System – Quiz 35 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 35 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. An increase in CO2 in human blood shifts the oxyhaemoglobin dissociation curve to the right. What is the explanation for the effect? A) An increase in CO2 concentration increases the ventilation rate. B) CO2 is more soluable than oxygen and displaces it. C) Diffusion of CO2 between the alveoli and the blood is more rapid. D) Increasing the H+ concentration descreases haemoglobin affinity for oxygen. Show Answer Correct Answer: D) Increasing the H+ concentration descreases haemoglobin affinity for oxygen. 2. Is also called the windpipe A) Trachea. B) Lungs. C) Larynx. D) Nose. Show Answer Correct Answer: A) Trachea. 3. Heart with only one atrium and ventricle "Single Circulation" A) Fish Heart. B) Reptile/Amphibian Heart. C) Mammals Heart. D) None of above. Show Answer Correct Answer: A) Fish Heart. 4. Heart valve between the left ventricle and the aorta A) Mitral valve. B) Tricuspid valve. C) Capillaries. D) Aortic valve. Show Answer Correct Answer: D) Aortic valve. 5. Which component of blood plays an important role in clotting to prevent "bleeding out" A) Eosinophils. B) Leukocytes (white blood cells). C) Erythrocytes (red blood cells). D) Thrombocytes (platelets). Show Answer Correct Answer: D) Thrombocytes (platelets). 6. Which is the correct path of electrical impulses through the heart? A) SA $\rightarrow$ AV $\rightarrow$ Bundle Branches $\rightarrow$ Purkinje Fibers. B) AV $\rightarrow$ SA $\rightarrow$ Bundle Branches $\rightarrow$ Purkinje Fibers. C) AV $\rightarrow$ Bundle Branches $\rightarrow$ SA $\rightarrow$ Purkinje Fibers. D) SA $\rightarrow$ Purkinje Fibers $\rightarrow$ Bundle Branches $\rightarrow$ AV. Show Answer Correct Answer: A) SA $\rightarrow$ AV $\rightarrow$ Bundle Branches $\rightarrow$ Purkinje Fibers. 7. Which blood cells fight with germs or illness? A) White blood cells. B) Red blood cells. Show Answer Correct Answer: A) White blood cells. 8. What does the circulatory system take out from our body? A) Nutrients. B) Blood. C) Waste. D) Oxygen. Show Answer Correct Answer: C) Waste. 9. What are the main organs of the respiratory system that allow us to breathe and for gas exchange to happen? A) Diaphragm. B) Lungs. C) Trachea. D) None of above. Show Answer Correct Answer: B) Lungs. 10. Has A antigens on the surface of the red blood cells and B antibodies in the blood plasma A) Rh grouping system. B) Rh grouping system. C) Antigens. D) Type A. E) Agglutination. Show Answer Correct Answer: D) Type A. 11. In human beings, the duration of cardiac cycle is A) 0.5 seconds. B) 0.8 seconds. C) 8.0 seconds. D) 0.08 seconds. Show Answer Correct Answer: B) 0.8 seconds. 12. What are organs made up of? A) Multiple Organisms. B) Multiple Tissues. C) Multiple Organ Systems. D) None of above. Show Answer Correct Answer: B) Multiple Tissues. 13. Our circulatory system helps us to: A) It supplies oxygen and nutrients to our bodies. B) It helps us to walk, eat, move, stretch, etc. Show Answer Correct Answer: A) It supplies oxygen and nutrients to our bodies. 14. Fluids for circulation in humans..... A) Blood. B) Lymph. C) Both. D) Plasma Plasma. Show Answer Correct Answer: C) Both. 15. What are the purpose of Valves? A) To transport nutrients to the blood. B) To transfer oxygen to the muscles. C) To transfer carbon dioxide to the blood. D) To stop blood flowing backwards. Show Answer Correct Answer: D) To stop blood flowing backwards. 16. Where does our oxygenated blood go to after leaving the heart? A) Your mouth. B) Your lungs. C) Right atrium. D) Your head and body. Show Answer Correct Answer: D) Your head and body. 17. Which organism can find low-oxygen blood mixed with high-oxygen blood? Inside the heart chamber A) Myna, blue crab. B) Bullfrog, Toad. C) Crocodile. D) Frog shark. Show Answer Correct Answer: B) Bullfrog, Toad. 18. When experimenting with the growth of a plant, a scientist uses three (of the same type of) plants, two different fertilizers, equal light, and equal water. What type of variable is the fertilizer? A) Independent. B) Control. C) Compound. D) Dependent. Show Answer Correct Answer: A) Independent. 19. What is the main function of the aorta? A) Carrying blood to the heart. B) Clotting blood. C) Carrying blood away from the heart. D) Producing red blood cells. Show Answer Correct Answer: C) Carrying blood away from the heart. 20. As your heart pushes blood through your body's vessels, blood pushes against the walls of the vessels creating ..... A) Arteries. B) Blood pressure. C) Arteriosclerosis. D) Symptoms. Show Answer Correct Answer: B) Blood pressure. 21. Short artery that subdivides into 3 branches:left gastric artery, splenic artery, & hepatic artery- A) Aortic arch. B) Celiac trunk. C) Thoracic aorta. D) Abdominal aorta. Show Answer Correct Answer: B) Celiac trunk. 22. Arteries generally carry oxygen rich blood away from the heart. A) True. B) False. Show Answer Correct Answer: A) True. 23. Heart is enclosed between..... A) Pericardium. B) Cardiac muscles. C) Bicardium. D) Treicardium. Show Answer Correct Answer: A) Pericardium. 24. The primary organ of the circulatory system is the ..... A) Brain. B) Skin. C) Heart. D) Lungs. Show Answer Correct Answer: C) Heart. 25. The movement of blood through the body is called ..... A) Respiration. B) Circulation. C) Locomotion. D) Photosynthesis. Show Answer Correct Answer: B) Circulation. 26. Who makes their own food? A) Decomposers. B) The Sun. C) Producers. D) Consumers. Show Answer Correct Answer: C) Producers. 27. This is a cluster of blood that is blocking vessels in the brain. A) Heart Attack. B) Stroke. C) Tachycardia. D) None of above. Show Answer Correct Answer: B) Stroke. 28. Transport oxygen-rich blood from the heart to the body A) Veins. B) Arteries. C) Capillaries. D) None of above. Show Answer Correct Answer: B) Arteries. 29. Heart Attack Warning Sign:Rapid or irregular heartbeat A) Men. B) Women. C) Both. D) None of above. Show Answer Correct Answer: A) Men. 30. Which of these cells is responsible for fighting infection? A) Red blood cell. B) White blood cell. C) Pathogen. D) Platelet. Show Answer Correct Answer: B) White blood cell. 31. Which is the small, upper, chambers of the heart? A) Atrium. B) Ventricles. Show Answer Correct Answer: A) Atrium. 32. Where does the blood take nutrients from? A) Lungs. B) Small intestine. C) Kidneys. D) Brain. Show Answer Correct Answer: B) Small intestine. 33. How many gallons of blood does the human body pump through its system each day? A) 200 gallons. B) 2000 gallons. C) 20 gallons. D) 2 gallons. Show Answer Correct Answer: B) 2000 gallons. 34. Which chamber produces the highest pressure in the blood? A) Right Atrium. B) Left Ventricle. C) Left Atrium. D) Right Ventricle. Show Answer Correct Answer: B) Left Ventricle. 35. What is the function of veins? A) Transporting carbon dioxide to the lungs. B) Transporting oxygen to the cells. Show Answer Correct Answer: A) Transporting carbon dioxide to the lungs. 36. What is the clear, straw colored fluid that is the liquid portion of blood? A) Plasma. B) Platelets. C) Capillaries. D) White Blood Cells. Show Answer Correct Answer: A) Plasma. 37. The air we breathe in is called Oxygen. A) False. B) True. Show Answer Correct Answer: B) True. 38. What does the heart do? A) It protects organs and produces red blood cells. B) It breaks down food into nutrients. C) It pumps the blood. D) None of above. Show Answer Correct Answer: C) It pumps the blood. 39. What are the main structures of the circulatory sytem? A) 1.heart 2.blood vessels 3.lungs. B) 1.blood 2.heart. C) 1.heart 2.lungs 3.brain. D) 1.heart 2.blood vessels 3.blood. Show Answer Correct Answer: D) 1.heart 2.blood vessels 3.blood. 40. Define vascular tissue A) Photosynthetic organs that contain one or more bundles of vascular tissue. B) The vascular tissue through which food moves in some plants. C) Tissue that conducts water and nutrients through the plant body in higher plants. D) The type of tissue in vascular plants that provides support and conducts water and nutrients from the roots. Show Answer Correct Answer: C) Tissue that conducts water and nutrients through the plant body in higher plants. 41. What is the average heart rate per minute for humans (bpm)? A) 100-120. B) 40-60. C) 60-100. D) 20-40. Show Answer Correct Answer: C) 60-100. 42. What is the function of your arteries? A) Carry blood to the heart. B) Carry blood to the lungs. C) Carry blood away from the heart. D) Connect the veins and capillaries. Show Answer Correct Answer: C) Carry blood away from the heart. 43. Blood vessels are divided into how many types? A) 3. B) 1. C) 2. D) 4. Show Answer Correct Answer: C) 2. 44. Carries oxygenated blood from the heart A) Aorta. B) Capillaries. C) Veins. D) Artery. Show Answer Correct Answer: D) Artery. 45. The aorta is a(n) ..... ? A) Veins. B) Artery. C) Chambers. D) None of above. Show Answer Correct Answer: B) Artery. 46. How many materials are carried in the blood? A) 3. B) 5. C) 4. D) 6. Show Answer Correct Answer: B) 5. 47. The heart is shaped like a star. A) True. B) False. Show Answer Correct Answer: B) False. 48. What transports lymph fluid back to the circulatory system? A) Lymph. B) Lymph Vessels. C) Lymph Nodes. D) Lymph Glands. Show Answer Correct Answer: B) Lymph Vessels. 49. The minor function for the circulatory system is A) To circulate the blood. B) To transfer O2. C) Transports hormones and removes waste products. D) None of above. Show Answer Correct Answer: C) Transports hormones and removes waste products. 50. Which of the following factors is responsible for the increase in heart rate during exercise? A) Increased adrenaline in the blood stream. B) Decreased oxygen concentration in the blood stream. C) Increased glucose concentration in the blood steam. D) Accumulation of lactic acid in the muscles. Show Answer Correct Answer: B) Decreased oxygen concentration in the blood stream. 51. Valves prevent back flow (blood reversing direction), which valve prevents back flow into the right ventricle? A) Tricuspid Valve. B) Aortic Semilunar Valve. C) Pulmonary Semilunar Valve. D) Bicuspid Valve (Mitral Valve). Show Answer Correct Answer: C) Pulmonary Semilunar Valve. 52. Auricles have thick, elastic walls. A) True. B) False. C) Dont know. D) None of above. Show Answer Correct Answer: B) False. 53. What allows blood to flow in only one direction through the heart? A) Atrium. B) Ventricle. C) Valve. D) None of above. Show Answer Correct Answer: C) Valve. 54. Ila is in need of a blood transfusion. while he was migrating outside the city far from his family. If Ila's blood type is AB then the blood type that can be transfused is..... A) A. B) B. C) O. D) AB. E) A, B, O, and AB. Show Answer Correct Answer: E) A, B, O, and AB. 55. The heart is made out of how many partitions? A) 4. B) 2. C) 3. D) 1. Show Answer Correct Answer: B) 2. 56. The blood vessels that take blood away from the heart A) Arteries. B) Veins. C) Capillaries. D) None of above. Show Answer Correct Answer: A) Arteries. 57. What is the sequence of events in the transmission of an impulse through the heart muscle? a:AV node b:AV bundle c:SA node d:Through the atria e:Through the ventricles f:Bundle branches g:Purkinje fibers A) C, d, a, b, f, g, e. B) F, g, d, c, b, a, e. C) D, b, a, c, f, g, e. D) B, a, d, c, f, g, e. Show Answer Correct Answer: A) C, d, a, b, f, g, e. 58. The ..... is the main artery of the heart carrying oxygenated blood to all the parts of the body except the lungs. A) Right atrium. B) Aorta. C) Vena cava. D) Heart. Show Answer Correct Answer: B) Aorta. 59. What are the cells in the right atrium called that create an electric impulse for the heart to contract? A) Impulse activator. B) Valves. C) Pacemaker. D) Aorta. Show Answer Correct Answer: C) Pacemaker. 60. A ..... (Cardiovascular Accident, CVA) occurs when you have an interruption to the vascular supply to the brain A) Myocardial Infarction. B) Stroke. C) Heart Failure. D) Angina Pectoris. E) High Cholesterol. Show Answer Correct Answer: B) Stroke. ← PreviousNext →Related QuizzesScience QuizzesGeneral Knowledge QuizzesCirculatory System Quiz 1Circulatory System Quiz 2Circulatory System Quiz 3Circulatory System Quiz 4Circulatory System Quiz 5Circulatory System Quiz 6Circulatory System Quiz 7Circulatory System Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books