This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 273 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 273 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Where is hemoglobin located? A) In plasma. B) In the intrapleural space. C) Inside red blood cells. D) In the alveoli. Show Answer Correct Answer: C) Inside red blood cells. 2. We have been studying the ..... system. A) Circulatory. B) Immune. C) Respiratory. D) Nervous. Show Answer Correct Answer: A) Circulatory. 3. What is true about the pacemaker? A) It is located in the left atrium and controls the pattern of contraction and relaxation by sending electrical signal. B) It is located in the right atrium and controls the pattern of contraction and relaxation by sending electrical signal. C) It is located in the right atrium and prevents the backflow of blood. D) It is located in the left atrium and prevents the backflow of blood. Show Answer Correct Answer: B) It is located in the right atrium and controls the pattern of contraction and relaxation by sending electrical signal. 4. The blood vessels that carries blood away from the kidney A) Renal artery. B) Hepatic portal vein. C) Renal vein. D) Inferior vena cava. Show Answer Correct Answer: C) Renal vein. 5. How much blood do you have in your body? A) 4-5 quarts. B) 5-6 quarts. C) 6-7 quarts. D) None of above. Show Answer Correct Answer: B) 5-6 quarts. 6. Hair in your nose and mucus help to trap dust, bacteria, and other materials from going into your lungs when you breathe in. A) True. B) False. Show Answer Correct Answer: A) True. 7. When you go to the doctor and they want to see how hard your heart is pumping, they take your ..... A) Blood pressure. B) Temperature. C) Pulse. D) Name and address. Show Answer Correct Answer: A) Blood pressure. 8. Which vessel is responsible for taking oxygen rich blood to the body? A) Pulmonary artery. B) Pulmonary vein. C) Aorta. D) Vena cava. Show Answer Correct Answer: C) Aorta. 9. Helps to clot blood A) Platelets. B) Plasma. C) White blood cells. D) Red blood cells. Show Answer Correct Answer: A) Platelets. 10. The part of the experiment that does not contain the independent variable. Used for comparison. A) Control Group. B) Experimental Group. C) Results. D) Data. Show Answer Correct Answer: A) Control Group. 11. Which of the following is the correct order from smallest to biggest? A) Cell-Organ-Tissue. B) Organ-Tissue-Cell. C) Cell-Tissue-Organ. D) Organ-Cell-Tissue. Show Answer Correct Answer: C) Cell-Tissue-Organ. 12. What is the main function of the vena cava in the circulatory system? A) Carry blood towards the heart. B) Carry blood away from the heart. C) Involved in the clotting process of the blood following an injury. D) Protect against disease and harmful bacteria; produce antibodies. Show Answer Correct Answer: A) Carry blood towards the heart. 13. A lodged clot that grows on site is called a(n) A) Embolism. B) Thrombus. Show Answer Correct Answer: B) Thrombus. 14. Arrange the events below in the order that they actually happen for coronary heart disease? I. plaque formsII. cholesterol builds up in artery wallIII. blood clot forms Only one answer is correct? A) I $\rightarrow$ II $\rightarrow$ III. B) II $\rightarrow$ III $\rightarrow$ I. C) I $\rightarrow$ III $\rightarrow$ II. D) II $\rightarrow$ I $\rightarrow$ III. Show Answer Correct Answer: D) II $\rightarrow$ I $\rightarrow$ III. 15. The valve that is located between the right atrium and the right ventricle. A) Tricuspid Valve. B) Pulmonary Valve. C) Mitral Valve. D) Aortic Valve. Show Answer Correct Answer: A) Tricuspid Valve. 16. Life span of WBC A) 10 to 30 days. B) 13 to 20 days. C) 19 to 70 days. D) 120 days. Show Answer Correct Answer: B) 13 to 20 days. 17. What organ pumps blood throughout your body? A) Veins. B) Arteries. C) Heart. D) Blood vessels. Show Answer Correct Answer: C) Heart. 18. Why erythrocyte, platelets and protein plasma cannot be found in the interstitial fluid and lymph? A) The size are too big. B) It can change the shape. C) It is too small. D) Red in colour. Show Answer Correct Answer: A) The size are too big. 19. How many chambers are there in the human heart? A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: D) 4. 20. Thinnest blood vessels that allow substances to diffuse into and out of the blood A) Veins. B) Arteries. C) Capillaries. D) Synapses. Show Answer Correct Answer: C) Capillaries. ← 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