This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Biology > Circulatory System โ Quiz 90 ๐ Homepage ๐ Download PDF Books ๐ Premium PDF Books Circulatory System Quiz 90 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the correct equation for cellular respiration? A) 6CO2 + 6H2O $\rightarrow$ 6O2 + C6H12O6 + Energy. B) 6CO2 + 6H2O + Energy $\rightarrow$ 6O2 + C6H12O6. C) 6O2 + C6H12O6 + Energy $\rightarrow$ 6CO2 + 6H2O. D) 6O2 + C6H12O6 $\rightarrow$ 6CO2 + 6H2O + Energy. Show Answer Correct Answer: D) 6O2 + C6H12O6 $\rightarrow$ 6CO2 + 6H2O + Energy. 2. What divides the left and right sides of the heart? A) Apex. B) Ventricle. C) Septum. D) Atrium. Show Answer Correct Answer: C) Septum. 3. What do we call the tubes that carry blood A) Blood vessels. B) Pumps. C) Heart. D) Cells. Show Answer Correct Answer: A) Blood vessels. 4. What are antibodies? A) Part of the blood that helps the blood clot to prevent more bleeding. B) A protein in red blood cells that gives the cells the red color. C) The liquid part of the blood made of water, salts, and other chemicals. D) White blood cells make these to fight off specific diseases in the body. Show Answer Correct Answer: D) White blood cells make these to fight off specific diseases in the body. 5. What is the main function of blood plasma? A) Targeting pathogens and fighting off infections. B) Binding to oxygen and transporting it to cells to be used in respiration. C) Transporting blood cells and other important substances around the body. D) Helping the blood clot in the arteries. Show Answer Correct Answer: C) Transporting blood cells and other important substances around the body. 6. Which part of the heart pumps blood to the lungs only? A) Left ventricle. B) Left atrium. C) Right ventricle. D) Right atrium. Show Answer Correct Answer: C) Right ventricle. 7. What is the function of valves in blood vessels? A) Increase blood pressure. B) Transports blood from the heart. C) Prevents blood from flowing backwards. D) Exchanging substances with cells. Show Answer Correct Answer: C) Prevents blood from flowing backwards. 8. Blood flows into the ..... from the vena cava (the main vein) or the pulmonary vein. A) Aorta. B) Atrium. C) Pulmonary artery. D) Ventricle. Show Answer Correct Answer: B) Atrium. 9. The heart is an important organ because A) Takes oxygen from the air. B) Pumps blood. C) The digestion process. D) None of above. Show Answer Correct Answer: B) Pumps blood. 10. Blood vessels that carry blood away from the heart A) Synapses. B) Arteries. C) Capillaries. D) Veins. Show Answer Correct Answer: B) Arteries. 11. Which is not true of blood? A) It is a mixture. B) It takes away waste materials from the cell. C) It brings everything to the cell it needs. D) It is part of the digestive system. Show Answer Correct Answer: D) It is part of the digestive system. 12. Which blood vessels carry oxyganeted blood? A) Veins. B) Arteries. Show Answer Correct Answer: B) Arteries. 13. What chamber of the heart pumps blood to the lungs? A) Right Ventricle. B) Left Ventricle. C) Left Atrium. D) Right Atrium. Show Answer Correct Answer: A) Right Ventricle. 14. This chamber pumps the oxygen-rich blood to all parts of the body. A) Left Ventricle. B) Right Ventricle. C) Left Atrium. D) Right Atrium. Show Answer Correct Answer: A) Left Ventricle. 15. The ..... chambers of the heart are the right and left atrium. A) Upper. B) Lower. C) Separate. D) Four. Show Answer Correct Answer: A) Upper. 16. Which of the following is NOT a layer of blood? A) Plasma. B) Buffy Layer. C) Erythrocytes. D) Antibodies. Show Answer Correct Answer: D) Antibodies. 17. This is the liquid portion of blood: A) Glucose. B) Cytoplasm. C) Plasma. D) Hydrochloric acid. Show Answer Correct Answer: C) Plasma. 18. Smallest and thinnest blood vessels. they connect arteries and veins A) Arteries. B) Veins. C) Capillaries. D) None of above. Show Answer Correct Answer: C) Capillaries. 19. (a) takes carbon dioxide and waste towards the heart. A) A Veins. B) Arteries. C) Capillaries. D) None of above. Show Answer Correct Answer: A) A Veins. 20. Which of the following carries oxygen and nutrients from arteries to the tissues? A) Veins. B) The aorta. C) Capillaries. D) None of above. Show Answer Correct Answer: C) Capillaries. 21. This circuit of the circulatory system strictly provides blood to the heart. A) Pulmonary circuit. B) Systemic circuit. C) Coronary circuit. D) None of above. Show Answer Correct Answer: C) Coronary circuit. 22. The circulatory system removes following waste gas from our body: A) Carbon-dioxide. B) Nitrogen. Show Answer Correct Answer: A) Carbon-dioxide. 23. Where is oxygen transferred to the bloodstream? A) In the bronchis. B) In the diaphragm. C) In the alveoli. D) In the intestines. Show Answer Correct Answer: C) In the alveoli. 24. From the body ..... blood then travels back to the heart through small capillaries then to the ..... and back to the heart through larger veins. A) Deoxygenated, Lungs. B) Deoxygenated, Aorta. C) Oxygenated, Aorta. D) Oxygenated, Lungs. Show Answer Correct Answer: A) Deoxygenated, Lungs. 25. In performing life processes, the cells produce waste materials. These materials is known as ..... A) Metabolic Blood. B) Metabolic Wastes. C) Metabolism. D) Methamphetamines'. Show Answer Correct Answer: B) Metabolic Wastes. 26. Which of the following is the function of plasma? A) Transport oxygen from lungs to respiring tissues. B) Involved in immune defense. C) Involved in blood clotting. D) Contains electrolytes which are important for maintaining fluid balance and blood pH. Show Answer Correct Answer: D) Contains electrolytes which are important for maintaining fluid balance and blood pH. 27. Which of the following brings deoxygenated blood INTO the right atrium of the heart? A) Aorta. B) Pulmonary veins. C) Vena cava. D) None of above. Show Answer Correct Answer: C) Vena cava. 28. The jelly-like material inside the cell A) Lysosome. B) Ribosomes. C) Grain. D) Cytoplasm. Show Answer Correct Answer: D) Cytoplasm. 29. Which of the following has a THICKER tunica media, and why? A) Veins; To increase pressure in the vessel. B) Veins; To decrease pressure in the vessel. C) Arteries; To increase pressure in the vessel. D) Arteries; To decrease pressure in the vessel. Show Answer Correct Answer: C) Arteries; To increase pressure in the vessel. 30. What type of muscle do you find in the heart? A) Smooth muscle. B) Skeletal muscle. C) Cardiac muscle. D) None of above. Show Answer Correct Answer: C) Cardiac muscle. 31. Small blood vessels that connect arteries to veins. A) Diastole. B) Endocardium. C) Capillaries. D) Circulatory system. Show Answer Correct Answer: C) Capillaries. 32. Blood flows through? A) Arteries. B) Veins. C) Capillaries. D) All of the above. Show Answer Correct Answer: D) All of the above. 33. Capillaries are blood vessels too. A) TRUE. B) FALSE. Show Answer Correct Answer: A) TRUE. 34. Which blood vessel carries blood away from the heart A) Artery. B) Vein. C) Capillary. D) None of above. Show Answer Correct Answer: A) Artery. 35. Which valve prevents blood flowing back into the left atrium from the left ventricle? A) The tricuspid valve. B) The mitral valve. C) The aortic valve. D) The pulmonary valve. Show Answer Correct Answer: B) The mitral valve. 36. Blood vessel:veinsblood:red blood cellsheart: ..... A) Atrium. B) Capillaries. C) Platelets. D) Arteries. Show Answer Correct Answer: A) Atrium. 37. I hungrily stared at the fresh pizza. A) Adverb. B) Adjective. Show Answer Correct Answer: A) Adverb. 38. The liquid portion of the blood is called platelets. A) FALSE. B) TRUE. Show Answer Correct Answer: A) FALSE. 39. What is the diastole? A) When the ventricles contract and pump blood into the aorta and pulmonary artery. B) When you exercise. C) When electrical current go through your blood. D) When the atrioventricular valves open and the ventricles relax. Show Answer Correct Answer: D) When the atrioventricular valves open and the ventricles relax. 40. What occurs if blood does not flow properly through the veins? A) Aortic Stenosis. B) Atrial Septal Defect. C) Blood Clot. D) Aneurysm. E) SADS/SIDS. Show Answer Correct Answer: C) Blood Clot. 41. What is the name of the problem that happens when brain cells are starved of oxygen and die? A) Atherosclerosis. B) Heart failure. C) Stroke. D) Heart attack. Show Answer Correct Answer: C) Stroke. 42. What happens if the pericardium is not surrounded by the heart? What happens if there is no pericardium around the heart? A) No blood circulation to heart. B) No protection from poisonous substance. C) No protection from external shocks. D) All the above เฐชเฑเฐตเฐจเฑเฐจเฑ. Show Answer Correct Answer: C) No protection from external shocks. 43. Can someone with type A blood accept type A blood? A) No they cannot. B) Yes they can. Show Answer Correct Answer: B) Yes they can. 44. Without the ..... here would have been friction between the layers of the heart when it beats? A) Myocardium. B) Epicardium. C) Endocardium. D) Pericardium. Show Answer Correct Answer: D) Pericardium. 45. This disease of the cardiovascular system is characterized by fatty deposits (plaque) in walls of arterieswhich can obstruct flow of blood and raise blood pressure. A) Atherosclerosis. B) Aortic Stenosis. C) Septal Defect. D) Cardiac Arrest. Show Answer Correct Answer: A) Atherosclerosis. 46. Lets oxygen-rich blood from your lungs pass from the left atrium into the left ventricle A) Atria. B) Pulmonary semilunar valve. C) Tricuspid valve. D) Bicuspid (mitral) valve. Show Answer Correct Answer: D) Bicuspid (mitral) valve. 47. When the heart relaxes blood is pushed into the arteries. A) True. B) False. Show Answer Correct Answer: B) False. 48. These are structures that keep blood flowing in one direction A) Neurons. B) Valves. C) Septum. D) Bronchioles. Show Answer Correct Answer: B) Valves. 49. What is the primary muscle used in the process of inhalation? A) Intercostal muscles. B) Abdominal muscles. C) Diaphragm. D) Pectoral muscles. Show Answer Correct Answer: C) Diaphragm. 50. What is a part of the circulatory system? A) Heart, brain, muscle, skeleton. B) Heart, Veins, Arteries, Capillaries. C) Spine, Veins, Brain, Small Intestine. D) Bones, Muscle, Kidneys, Nerves. Show Answer Correct Answer: B) Heart, Veins, Arteries, Capillaries. 51. Normal heart rate range for adults is: A) 60-100. B) 80-120. C) 100 and up. D) 60 and below. Show Answer Correct Answer: A) 60-100. 52. What is the smallest blood vessel in the circulatory system? A) Veins. B) Lymph vessels. C) Arteries. D) Capillaries. Show Answer Correct Answer: D) Capillaries. 53. In the blood clotting process, Fibrinogen is converted into fibrin threads. The function of Fibrin threads is..... A) Prevent blood from leaving the body. B) Covers red blood cells. C) Covered with blood clots. D) Covers damaged tissue surfaces. Show Answer Correct Answer: D) Covers damaged tissue surfaces. 54. Which disease of the circulatory system is an abnormal heart rate? A) High Blood Pressure. B) Arrhythmia. C) Myocardial Infarction. D) Atherosclerosis. E) Prolapsed Valve. Show Answer Correct Answer: B) Arrhythmia. 55. White blood cells remove ..... and ..... A) Dead cells / Prevent disease. B) Plasma / supply oxygen. C) Bone marrow / prevent bleeding. D) None of above. Show Answer Correct Answer: A) Dead cells / Prevent disease. 56. Using the data below, find the mode. Each day Mike the Emu likes to chase children off of his hill. Below is data for the amount of children he chased off each day this week. Sunday-2Monday-4Tuesday-15Wednesday-8Thursday-0 (he was sad this day)Friday-8Saturday-26 A) 8. B) 26. C) 23. D) 9. Show Answer Correct Answer: A) 8. 57. The circulatory system is composed of: A) Heart, blood and lungs. B) Heart, septum and blood. C) Vessels, blood and heart. D) None of above. Show Answer Correct Answer: C) Vessels, blood and heart. 58. What is the importance of lungs in the circulatory system? A) The lungs are responsible for oxygenating blood. B) They collect oxygen poor blood from all parts of the body and bring it to the heart. C) They receive oxygen-poor blood from the superior and inferior vena cavae and transports it to the right ventricle. D) They transport oxygen-rich blood to the aorta. Show Answer Correct Answer: A) The lungs are responsible for oxygenating blood. 59. Freshly oxygenated blood enters the heart through the ....., and is pumped out the ..... A) Right atrium; aorta. B) Left atrium; aorta. C) Left ventricle; pulmonary arteries. D) Right ventricle; pulmonary arteries. Show Answer Correct Answer: B) Left atrium; aorta. 60. Which blood cell fights disease and infection? A) Plasma. B) White blood cells. C) Platelets. D) Red blood cells. Show Answer Correct Answer: B) White blood cells. โ PreviousNext โRelated 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 ๐ Back to Homepage ๐ Download PDF Books ๐ Premium PDF Books