This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 491 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 491 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. QRS complex is A) Relaxation of atria. B) Relaxation of ventricles. C) Contraction of atria. D) Contraction of ventricles. Show Answer Correct Answer: D) Contraction of ventricles. 2. What is the Circulartory System also known as? A) Cardio System. B) Cardiovascular System. C) Circular System. D) Nervous System. Show Answer Correct Answer: B) Cardiovascular System. 3. Either of the two upper chambers in the heart that receives oxygen from the veins A) Atrium. B) Ventricle. C) Artery. D) Vein. Show Answer Correct Answer: A) Atrium. 4. Arteries are strong elastic vessels that carry blood to the heart. A) True. B) False. Show Answer Correct Answer: B) False. 5. How to calculate the blood flow rate through the aorta in the given scenario? A) Increase the amount of blood by the time required. B) Multiply the amount of blood by the time required. C) Divide the amount of blood by the time required. D) Subtract the amount of blood from the time required. Show Answer Correct Answer: C) Divide the amount of blood by the time required. 6. This is the order in which the blood flows in our body. A) Head, arms, aorta, thorax, abdomen, legs. B) Aorta, abdomen, legs, head, arms, thorax. C) Head, abdomen, thorax, legs, arms, aorta. D) Arms, thorax, aorta, abdomen, legs, head. Show Answer Correct Answer: A) Head, arms, aorta, thorax, abdomen, legs. 7. The SA node causes A) Atrial contraction. B) Atrial relaxation. C) Ventricular Contraction. D) Ventricular relaxation. Show Answer Correct Answer: A) Atrial contraction. 8. This chamber receives de-oxygenated blood first A) Right atrium. B) Right ventricle. C) Left atrium. D) Left ventricle. Show Answer Correct Answer: A) Right atrium. 9. The proper term for red blood cells is ..... A) Leucocytes. B) Thrombocytes. C) Erythrocytes. D) None of above. Show Answer Correct Answer: C) Erythrocytes. 10. What does the artery do? A) Carries the blood to and from the body's cells. B) Carries the blood back into the heart. C) Carries blood away from the heart. D) Damaged blood vessels. Show Answer Correct Answer: C) Carries blood away from the heart. 11. What chamber of the heart recieves blood from the body? A) They keep the blood flowing one way. They stop blood flowing back into the chamber that they left. B) No pulmonary arter carries oxygen poor blood to the lungs. C) Right atrium. D) Left atrium. Show Answer Correct Answer: C) Right atrium. 12. Composed of cells A) Muscle. B) Waste. C) Tissue. D) Speed Up. E) Beat. Show Answer Correct Answer: A) Muscle. 13. The blood flowing within the left ventricle travels to which part of the circulatory system next? A) Right atrium. B) Aorta. C) Pulmonary artery. D) Right ventricle. Show Answer Correct Answer: B) Aorta. 14. Which vessel is being described?"small vessels which form a large network around organs and tissues, taking substances needed and removing waste products" A) Arteries. B) Veins. C) Capillaries. D) None of above. Show Answer Correct Answer: C) Capillaries. 15. What are small, irregularly shaped pieces of cells that plug wounds and stop bleeding called? A) Blood vessels. B) Plasma. C) Platelets. D) Red blood cells. Show Answer Correct Answer: C) Platelets. 16. Your blood takes nutrients, hormones, and oxygen all around the body to all theplaces they need to go. A) True. B) False. Show Answer Correct Answer: A) True. 17. Consists of 2 atrium (porch) and 2 ventricles (chambers) A) Heart wall (3). B) Heart room. C) Heart valves (3). D) Cardiac nerves (3). Show Answer Correct Answer: B) Heart room. 18. Which vessel is strong and elastic in order to undergo increased pressure as blood travels to the lungs? A) Capillary bed. B) Portal vein. C) Ductus arteriosus. D) Pulmonary artery. Show Answer Correct Answer: D) Pulmonary artery. 19. The main artery in the heart is the A) Aorta. B) Vena cava. C) Pulmonary artery. D) Pulmonary flow. Show Answer Correct Answer: A) Aorta. 20. Vessels that receive blood from the heart A) Arteries. B) Capillaries. C) Veins. D) None of above. Show Answer Correct Answer: A) Arteries. ← 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