This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 517 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 517 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which blood component is responsible for carrying oxygen to other cells? A) Erythrocytes (red blood cells). B) Thrombocytes (platelets). C) Leukocytes (white blood cells). D) Basophils. Show Answer Correct Answer: A) Erythrocytes (red blood cells). 2. Why are you not able to control your reflexes? A) Because they are controlled by your spinal cord. B) Because they are controlled by your brain. C) Because they are controlled by voluntary muscles. D) Because they are controlled by your circulatory system. Show Answer Correct Answer: A) Because they are controlled by your spinal cord. 3. The chamber of the heart that receives deoxygenated blood from the superior and inferior vena cava. A) Right ventricle. B) Left atrium. C) Left ventricle. D) Right atrium. Show Answer Correct Answer: D) Right atrium. 4. Small fragment of a cell; helps form blood clots A) Platelet. B) Plasma. C) Red blood cell. D) White blood cell. Show Answer Correct Answer: A) Platelet. 5. How much does the human heart weigh? A) 550 grams. B) 455 grams. C) 450 grams. D) 445 grams. Show Answer Correct Answer: C) 450 grams. 6. What are white blood cells? A) They are the same a red blood cells, but white. B) They fight off disease and infection. C) They carry food to your muscles. D) They activate when you do exercise. Show Answer Correct Answer: B) They fight off disease and infection. 7. Fix veins and arteries when you have a cut A) Plasma. B) Platelets. C) Veins. D) Heart. Show Answer Correct Answer: B) Platelets. 8. Bicuspid valve is between the left auricle and left ventricle- A) True. B) False. Show Answer Correct Answer: A) True. 9. Which pulmonary carries blood TO the lungs? A) Artery. B) Vein. Show Answer Correct Answer: A) Artery. 10. I have thick walls and a small lumen A) Arteries. B) Veins. C) Capillaries. D) None of above. Show Answer Correct Answer: A) Arteries. 11. Blood circulating from the cells to blood vessels close to the surface of the skin helps regulate body temperature. A) True. B) False. Show Answer Correct Answer: A) True. 12. The contraction phase of the cardiac cyclce is called ..... It represents the higher number in reading blood pressure. A) Systolic. B) Diastolic. C) Mitral. D) Tricuspid. Show Answer Correct Answer: A) Systolic. 13. Which ventricle has thicker muscle wall? A) Left ventricle. B) Right ventricle. Show Answer Correct Answer: A) Left ventricle. 14. What are the thinnest blood vessels called? A) Arteries. B) Veins. C) Capillaries. D) The aorta. Show Answer Correct Answer: C) Capillaries. 15. Ventricular systole causes what to happen to the blood? A) Push the blood out of the heart with high speed through the veins. B) Push the blood out with high speed into the atriums. C) Push the blood out of the heart with high speed through the arteries. D) Allows the ventricles to fill with blood. E) Allows the atriums to fill with blood. Show Answer Correct Answer: C) Push the blood out of the heart with high speed through the arteries. 16. Which blood vessel will have the greatest amount of oxygen A) Jugular. B) Vena cava. C) Pulmonary artery. D) Femoral artery. Show Answer Correct Answer: D) Femoral artery. 17. Which of the following carries oxygen in the blood? A) White blood cells. B) Plasma. C) Platelets. D) Red Blood Cells. Show Answer Correct Answer: D) Red Blood Cells. 18. What is not a feature of natural selection? A) A competition for resources. B) B production of many offspring. C) C selection by humans. D) D variation within the population. Show Answer Correct Answer: C) C selection by humans. 19. In which part does the small circulation exchange gases? A) Tissue. B) Lung. C) Capillaries. D) Tim. Show Answer Correct Answer: B) Lung. 20. What do you call to the part of the heart that receives blood from the body? A) Right atrium. B) Right ventricle. C) Left atrium. D) Left ventricle. Show Answer Correct Answer: A) Right atrium. ← 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