This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 293 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 293 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following is NOT the structure of haemoglobin? A) Each haemoglobin molecule contains 4 haem groups. B) Haemoglobin has a quaternary structure. C) Each haem group in haemoglobin can bind with 4 molecules of oxygen. D) Each haemoglobin molecule has 2 $\alpha$-chain and 2 $\beta$-chain polypeptide subunits. Show Answer Correct Answer: C) Each haem group in haemoglobin can bind with 4 molecules of oxygen. 2. Which of the following describes how blood moves through the 4 chambers of the heart A) Oxygenated blood from the left atria moves to the right ventricle. B) Oxygenated blood from the left atria moves to the left ventricle. C) Deoxygenated blood from the left atria moves to the right ventricle. D) Deoxygenated blood from the right atria moves to the left ventricle . Show Answer Correct Answer: B) Oxygenated blood from the left atria moves to the left ventricle. 3. I contain hemoglobin which attracts oxygen and takes it to your cells. Then hemoglobin takes waste and carbon dioxide to the heart and lungs to get rid of them. A) White blood cells. B) Red blood cells. C) Plasma. D) Platelets. Show Answer Correct Answer: B) Red blood cells. 4. Your heart is ..... A) An organ. B) A body system. C) A nervous system. D) A skeletal system. Show Answer Correct Answer: A) An organ. 5. Can a plant grow fruit if it gets no sunlight? A) Yes. B) Depends on the plant. C) No. D) None of above. Show Answer Correct Answer: C) No. 6. First part of Cardiac Conduction System:This *PACEMAKER* sends action potentials to both atria causing them to contract. A) Sinoatrial (SA) Node. B) AV node. Show Answer Correct Answer: A) Sinoatrial (SA) Node. 7. Why does blood turn dark red as it circulates through the body? A) It starts to clot. B) It gets old and dirty flowing through the body. C) The oxygen in it is replaced by carbon di oxide. D) The farther the blood is from the heart the more darker it is. Show Answer Correct Answer: C) The oxygen in it is replaced by carbon di oxide. 8. Continuous cholesterol build-up on the arterial walls will result to ..... A) Atherosclerosis. B) Asphyxia. C) Atresia. D) Ascariasis. Show Answer Correct Answer: A) Atherosclerosis. 9. Another name for alveoli is ..... A) Ravioli. B) Air sacs. C) Nutrient sacs. D) Artery sacs. Show Answer Correct Answer: B) Air sacs. 10. The human body has both internal and external defense against disease. Which of these includes only internal defenses? A) Hair and inflammation. B) White blood cells and sweat. C) Inflammation and white blood cells. D) Skin and mucus. Show Answer Correct Answer: C) Inflammation and white blood cells. 11. These are the basic functions of circulatory system EXCEPT A) Fight off disease. B) Transport nutrients. C) Maintain normal body temperature. D) Sensory-transmitting signals. Show Answer Correct Answer: D) Sensory-transmitting signals. 12. Cardiovascular system is also known as ..... A) Circulatory System. B) Digestive System. C) Excretory System. D) Nervous System. Show Answer Correct Answer: A) Circulatory System. 13. This fluid is transported back to the circulation (venous side) via the lymph vascular system A) Serum. B) Blood. C) Lymph. D) Interstitial fluid. Show Answer Correct Answer: C) Lymph. 14. The part of our heart separating oxygenated blood from deoxygenated blood is called: A) Pericardium. B) Septum. C) Bicuspid valve. D) Tricuspid valve. Show Answer Correct Answer: B) Septum. 15. How do your nerves work? A) They carry messages back and forth from the brain to the rest of the body. B) The send messages only to the spinal cord. C) They only receive messages from the spinal cord. D) They really don't work. They are lazy and want everything done for them. Show Answer Correct Answer: A) They carry messages back and forth from the brain to the rest of the body. 16. ..... fights off germs and infections A) White blood cells. B) Red blood cells. C) Plasma. D) Platelets. Show Answer Correct Answer: A) White blood cells. 17. The job of the circulatory system is to carry oxigen and nutrients around the body. A) TRUE. B) FALSE. Show Answer Correct Answer: A) TRUE. 18. During a blood typing test, a droplet of blood is found to have both A and B antigens. What is the blood type? A) A. B) B. C) AB. D) O. Show Answer Correct Answer: C) AB. 19. How does the system work? A) Pumps blood from the heart to the lungs to get oxygen. B) Delivers food and other edible thing to the stomach. C) Allows oxygen in the air to be taken into the body. D) None of above. Show Answer Correct Answer: A) Pumps blood from the heart to the lungs to get oxygen. 20. The heart contains four chambers. Which statement below is correct? A) The 2 atriums are in the upper part of the heart and the 2 ventricles are in the bottom. B) One atrium is in the upper part of the heart, and one is in the lower part of the heart. C) There are 3 atriums in the upper part of the heart and 1 ventricle in the bottom. D) The 2 ventricles are in the upper part of the heart. Show Answer Correct Answer: A) The 2 atriums are in the upper part of the heart and the 2 ventricles are in the bottom. ← 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