This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 702 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 702 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. How many chambers are found in the human heart? A) 1. B) 4. C) 3. D) 2. Show Answer Correct Answer: B) 4. 2. The blood consists of blood cells suspended in yellow liquid. What is this pale yellow liquid called? A) Haemoglobin. B) Red blood cells. C) Plasma. D) White blood cells. Show Answer Correct Answer: C) Plasma. 3. ..... transmit information from one neuron to the next. A) Action potentials. B) Axon hillocks. C) Cerebellar hemispheres. D) Neurotransmitters. Show Answer Correct Answer: D) Neurotransmitters. 4. The veins which carry oxygenated blood is ..... A) The veins. B) Aorta. C) Pulmonary veins. D) None of above. Show Answer Correct Answer: C) Pulmonary veins. 5. Bloods main function in the human body is to ..... A) Transport important materials for making energy. B) Make oxygen. C) Break down food for energy. D) Remove toxins from the body. Show Answer Correct Answer: A) Transport important materials for making energy. 6. Liquid part of the blood that dissolves waste products A) Plasma. B) Lymph. C) Platelets. D) Antibody. Show Answer Correct Answer: A) Plasma. 7. Which chamber of the heart receives blood from the body that is low in oxygen and high in carbon dioxide and other waste products? A) Right Atrium. B) Right Ventricle. C) Left Atrium. D) Left Ventricle. Show Answer Correct Answer: A) Right Atrium. 8. The ..... is a hollow muscle which pumps blood through the body. It usually beats between 60 and 100 times per minute, but can go much faster when it has to. When we do exercise, our bodies need more ....., so our ..... beats faster. A) Heart/oxygen/heart. B) Arteries/veins/capillaries. C) Oxygen/heart/oxygen. D) None of above. Show Answer Correct Answer: A) Heart/oxygen/heart. 9. Which is the smallest blood vessels? A) Heart. B) Arteries. C) Capillaries. D) Veins. Show Answer Correct Answer: C) Capillaries. 10. A flap of tissue that closes when we eat so food doesn't not go down the trachea A) Larynx. B) Pharynx. C) Trachea. D) Epiglottis. Show Answer Correct Answer: D) Epiglottis. 11. Blood cells responsible for blood coagulation..... A) RBC are red blood cells. B) WbC are white blood cells. C) Both. D) Platelets Platelets. Show Answer Correct Answer: D) Platelets Platelets. 12. The amount is 4-5 million/ml. This includes aspects..... A) Erythrocytes (Red blood cells). B) Leukocytes (White blood cells). C) Blood plasma. D) Thrombocytes (Blood clots). Show Answer Correct Answer: A) Erythrocytes (Red blood cells). 13. Nutrients and wastes are exchanged between body cells and blood in the A) Veins. B) Capillaries. C) Arteries. D) Heart. Show Answer Correct Answer: B) Capillaries. 14. Which of the following is a function of a valve? A) Prevents the backflow of blood from the right atrium to the right ventricle. B) Prevents the mixing of oxygenated and deoxygenated blood. C) Prevents the backflow of blood from the pulmonary vein to left atrium. D) Prevents the backflow of blood from the aorta to the left ventricle. Show Answer Correct Answer: D) Prevents the backflow of blood from the aorta to the left ventricle. 15. Blood from the systemic circuit returns directly into whichheart chamber? A) Left atrium. B) Right auricle. C) Left auricle. D) Right atrium. Show Answer Correct Answer: D) Right atrium. 16. Plasma consists of approximately ..... % water: A) 10. B) 40. C) 60. D) 90. Show Answer Correct Answer: D) 90. 17. In the systemic circuit, the blood enters the heart through the A) Vena cava. B) Aorta. C) Pulmonary artery. D) Pulmonary vein. Show Answer Correct Answer: A) Vena cava. 18. Which of the following is NOT a typical sign of a heart attack? A) Pain or discomfort in left arm. B) Shortness of breath. C) Chest pain. D) Severe indigestion. Show Answer Correct Answer: D) Severe indigestion. 19. Prevents backflow into the left atrium A) Mitral/Bicuspid valve. B) Tricuspid valve. C) Right atrium. D) None of above. Show Answer Correct Answer: A) Mitral/Bicuspid valve. 20. Which smallest blood vessel is only slightly larger than a red blood cell? A) Artery. B) Capillary. C) Vein. D) Veinule. Show Answer Correct Answer: B) Capillary. ← 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