This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Biology > Circulatory System – Quiz 66 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 66 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Movement of blood from heart to lungs and back to the heart A) Pulmonary Circulation. B) Coronary Circulation. C) Systematic Circulatic. D) None of above. Show Answer Correct Answer: A) Pulmonary Circulation. 2. The students were asked 'to submit' their assignments by Friday. A) Finite. B) Non-finite. Show Answer Correct Answer: B) Non-finite. 3. Which of the three types of blood vessels are the smallest? A) Capillaries. B) Arteries. C) Veins. D) None of above. Show Answer Correct Answer: A) Capillaries. 4. How many times the blood flows into the heart in fish? A) Twice. B) Once. Show Answer Correct Answer: B) Once. 5. A blood vessel that carries blood back to the heart is called ..... It has a one-way valve to control blood flow. A) Plasma. B) Veins. C) Capillaries. D) Artery. Show Answer Correct Answer: B) Veins. 6. Size of your heart is about the size of A) An apple. B) Human fist. C) A chickpea. D) A football. Show Answer Correct Answer: B) Human fist. 7. Which connects arteries & veins? A) Veins. B) Heart. C) Capillaries. D) Arteries. Show Answer Correct Answer: C) Capillaries. 8. Which chamber of the heart pushes blood out to the lungs? A) Right atrium. B) Right ventricle. C) Left atrium. D) Left ventricle. Show Answer Correct Answer: B) Right ventricle. 9. ..... carry oxygen and nutrients away from the heart to the body. A) Veins. B) Arteries. C) Lungs. D) Heart. Show Answer Correct Answer: B) Arteries. 10. Which human body system performs a function similar to that of the vascular system (xylem and Phloem) of a plant? A) Respiratory system. B) Skeletal system. C) Circulatory system. D) Muscular system. Show Answer Correct Answer: C) Circulatory system. 11. The muscles in the left ventricle are thicker than the right ventricle because..... A) The left ventricle pumps blood throughout the body. B) The left ventricle pumps blood to the lungs. C) The left ventricle receives blood from the lungs. D) The left ventricle receives blood from all over the body. Show Answer Correct Answer: A) The left ventricle pumps blood throughout the body. 12. This organ pumps blood to the body and is about the size of your fist. A) Heart. B) Liver. C) Stomach. D) Brain. Show Answer Correct Answer: A) Heart. 13. Coronary arteries:to A) Lungs. B) Right atrium. C) Heart muscles. D) Heart. Show Answer Correct Answer: C) Heart muscles. 14. The concentration of oxygen is highest in the blood flowing through the A) Superior vena cava. B) Inferior vena cava. C) Pulmonary vein. D) Pulmonary artery. Show Answer Correct Answer: C) Pulmonary vein. 15. In which of the following organisms is a circulatory system unnecessary due to the direct exchange of gases and nutrients through the body surface? A) Flatworms. B) Mammals. C) Fish. D) Birds. Show Answer Correct Answer: A) Flatworms. 16. ..... are the upper chambers of the heart. A) Platelets. B) Ventricles. C) Atriums. D) Plasma. Show Answer Correct Answer: C) Atriums. 17. The names of the bottom chambers are? A) Right and left atrium. B) Right and left ventricle. Show Answer Correct Answer: B) Right and left ventricle. 18. Inhale!!!! Your lungs are ..... air A) Taking in. B) Letting out. Show Answer Correct Answer: A) Taking in. 19. The narrowing of aorta A) Aneurysm. B) Aortic stenosis. C) Atherosclerosis. D) Ventricular Septal Defect. Show Answer Correct Answer: B) Aortic stenosis. 20. Blood enters the heart from the body through the ..... A) Pulmonary Artery. B) Superior/Inferior Vena Cava. C) Aorta. D) Pulmonary Vein. Show Answer Correct Answer: B) Superior/Inferior Vena Cava. 21. When a patient gets a blood test and has a high WBC count, this indicates that the patient likely has A) Infection. B) Nothing. C) Dehydration. D) Cancer. Show Answer Correct Answer: A) Infection. 22. Which statement is not a function of the skeletal system? A) Helps with movement. B) Stores minerals. C) Protects organs. D) Circulates blood in the body. Show Answer Correct Answer: D) Circulates blood in the body. 23. What is the tiniest blood vessel A) Aorta. B) Capillaries. C) One. D) None of above. Show Answer Correct Answer: B) Capillaries. 24. The pressure exerted on the arterial walls when the heart contract is called A) Systolic pressure. B) Diastolic pressure. C) Osmotic pressure. D) Hydrostatic pressure. Show Answer Correct Answer: A) Systolic pressure. 25. The smallest of the blood vessels, the ..... are important for bringing nutrients and oxygen to less innervated tissues. A) Veins. B) Capillaries. C) Arterioles. D) Arteries. Show Answer Correct Answer: B) Capillaries. 26. Heart strings that help open/close the AV valves A) Mitral. B) Myocardium. C) Tricuspid. D) Tendon chords. Show Answer Correct Answer: D) Tendon chords. 27. What colour is plasma? A) Red. B) Purple. C) Yellow. D) Pink. Show Answer Correct Answer: C) Yellow. 28. What are our smallest blood vessels? A) Capillaries. B) Caterpillars. Show Answer Correct Answer: A) Capillaries. 29. Those that bring blood back to the heart. A) Vessels. B) Blood. C) Veins. D) Artery. Show Answer Correct Answer: C) Veins. 30. What carry messages from the body to the brain? A) Sensory. B) Motor. C) Interneurons. D) None of above. Show Answer Correct Answer: A) Sensory. 31. Which of the following is NOT a disease of the circulatory system? A) Atherosclerosis. B) Pancreatitis. C) High Blood Pressure. D) Arrhythmia. Show Answer Correct Answer: B) Pancreatitis. 32. When bronchi become smaller they are called ..... A) Bronchus. B) Lungs. C) Alveoli. D) Bronchioles. Show Answer Correct Answer: D) Bronchioles. 33. Why is the blood that flows from the lungs to the heart bright red rather than dark red? A) As it flows with high speed. B) The lungs add a pigment to the blood. C) As it is rich in CO2. D) As it is rich in oxygen. Show Answer Correct Answer: D) As it is rich in oxygen. 34. What does your heart do? A) Pumps blood through your body. B) Protects your body. Show Answer Correct Answer: A) Pumps blood through your body. 35. Tensimeter / sphigmomanometer A) Normal human blood pressure. B) Blood pressure measuring device. Show Answer Correct Answer: B) Blood pressure measuring device. 36. Which is the smallest of the 3 blood vessels? A) Veins. B) Arteries. C) Capillaries. D) None of above. Show Answer Correct Answer: C) Capillaries. 37. What do we call the tiny tubes that carry blood AWAY from the heart? A) Arteries. B) Veins. C) Septum. D) Valves. Show Answer Correct Answer: A) Arteries. 38. Which one of the following is involved in maintaining a resting membrane potential? A) Na+/K+ ATPase pump moves 3K+ in for every 2Na+ out. B) Na+/K+ ATPase pump moves 3Na+ in for every 2K+ out. C) Na+/K+ ATPase pump moves 3Na+ out for every 2K+ in. D) Na+/K+ ATPase pump moves 3K+ out for every 2Na+ in. Show Answer Correct Answer: C) Na+/K+ ATPase pump moves 3Na+ out for every 2K+ in. 39. Heart rate will increase in the presences of ..... A) Albumin. B) Epinephrine (AKA adrenalin). C) Immunoglobulins. D) Erythropoietin. Show Answer Correct Answer: B) Epinephrine (AKA adrenalin). 40. In which animal are blood and intercellular fluid different? A) Shrimp. B) Crab. C) Earthworm. D) Grasshopper. E) Clams. Show Answer Correct Answer: C) Earthworm. 41. Thick muscle. You can feel your pulse here. Carries blood AWAY from the heart. A) Veins. B) Capillaries. C) Arteries. D) None of above. Show Answer Correct Answer: C) Arteries. 42. It is a network composed of the heart as the pumping station, the blood vessels that distribute blood throughout the body and the blood that transport different substances. A) Platelets. B) Blood. C) Ventricles. D) Cardiovascular system. Show Answer Correct Answer: D) Cardiovascular system. 43. After passing through the right atrium $\rightarrow$ Tricuspid Valve $\rightarrow$ right ventricle. Then, blood goes through the ..... valve. A) Bicuspid. B) Tricuspid. C) Aortic Semilunar. D) Pulmonary Semilunar. Show Answer Correct Answer: D) Pulmonary Semilunar. 44. ..... are tiny blood vessels which connect the arteries and the veins. They have very thin walls so gases and nutrients can easily pass through them to the cells. A) Capillaries. B) Veins. C) Arteries. D) None of above. Show Answer Correct Answer: A) Capillaries. 45. What is the large artery that carries oxygenated blood from the left ventricle to the body? A) Pulmonary vein. B) Aorta. C) Pulmonary artery. D) Superior vena cava. Show Answer Correct Answer: B) Aorta. 46. What actually causes you to inhale and exhale air? A) Lungs. B) Bronchi. C) Diaphragm. D) Bronchioles. Show Answer Correct Answer: C) Diaphragm. 47. Your nose moistens and filters air. Your diaphragn is a muscle that controls air intake and your lungs perform gas exchange. Which system performs all these functions? A) Skeletal. B) Respiratory. C) Circulatory. D) Digestive. Show Answer Correct Answer: B) Respiratory. 48. Arteries, Veins, and capillaries are 3 types of ..... A) Systems. B) Blood vessels. C) Cells. D) Organs. Show Answer Correct Answer: B) Blood vessels. 49. The basic unit of structure and function in an organism A) Cell. B) Breathing. C) Alveoli. D) Cartilage. E) Homeostasis. Show Answer Correct Answer: A) Cell. 50. Which of the following delivers oxygen to cells? A) Red Blood cells. B) Platelets. C) Plasma. D) White blood cells. Show Answer Correct Answer: A) Red Blood cells. 51. When you measure the movement caused by the pressure of your heart beat, by feeling an artery in your wrist or neck, you are taking your ..... A) Pulse. B) Temperature. C) Workout. D) Nap. Show Answer Correct Answer: A) Pulse. 52. Result from widening and bulging of veins due to defective or loose valve within the veins. commonly found on thighs and legs. prolonged standing and aging contribute to the development of this A) Arteriosclerosis. B) Varicose veins. C) Leukemia. D) Anemia. Show Answer Correct Answer: B) Varicose veins. 53. Which of the following contains a protein called haemoglobin? A) White blood cells. B) Platelets. C) Plasma. D) Red blood cells. Show Answer Correct Answer: D) Red blood cells. 54. When the heart muscles contract, this is called ..... A) Pulse. B) Systole. C) Respiration. D) Diastole. Show Answer Correct Answer: B) Systole. 55. Do my health habits in childhood impact my diet and exercise choices made as an adult? A) No. B) Yes. Show Answer Correct Answer: B) Yes. 56. The human heart has three chambers A) FALSE. B) TRUE. Show Answer Correct Answer: A) FALSE. 57. ..... are living and destroy harmful microbes. A) Red blood cells. B) White Blood Cells. C) Plasma. D) None of above. Show Answer Correct Answer: B) White Blood Cells. 58. What is the role of the white blood cells A) Carry oxygen. B) Fight infection. C) Blood clothing. D) None of above. Show Answer Correct Answer: B) Fight infection. 59. O2 is the symbol for A) 2 ore atoms. B) 2 carbon atoms. C) 2 oxygen atoms. D) 2 water molecules. Show Answer Correct Answer: C) 2 oxygen atoms. 60. What does the autonomic nervous system control? A) Cardiac muscles only. B) The spinal cord. C) Voluntary movement. D) Involuntary responses. Show Answer Correct Answer: D) Involuntary responses. ← 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