This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 246 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 246 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The pericardium around the heart is responsible for A) Opening and closing the heart valves. B) Creating the heart beat. C) Reducing friction around the heart. D) Bringing oxygen in from the lungs. Show Answer Correct Answer: C) Reducing friction around the heart. 2. The right side of the heart receives what from the body cells? A) Nutrients. B) Proteins. C) Deoxygenated blood. D) Oxygenated blood. Show Answer Correct Answer: C) Deoxygenated blood. 3. The process of formation of RBCs is called A) Haemolysis. B) Flattening. C) Phagocytosis. D) Erythropoiesis. Show Answer Correct Answer: D) Erythropoiesis. 4. The heart has four chambers and these are A) Two atria and two ventricles. B) One atrium and three ventricles. C) Three atria and one ventricle. D) Two ventricles and two valves. Show Answer Correct Answer: A) Two atria and two ventricles. 5. Why are water molecules able to enter the egg but NOT the sugar molecules? A) Sugar molecules are too heavy. B) The holes of the semi-permeable membrane were too small to let sugar molecules through. C) Semi-permeable membranes need energy. D) Semi-permeable membranes must be under pressure to work. Show Answer Correct Answer: B) The holes of the semi-permeable membrane were too small to let sugar molecules through. 6. Which organ contains 4 chambers and helps pump blood around the body? A) Lungs. B) Heart. Show Answer Correct Answer: B) Heart. 7. Whales heart beats ..... per minute A) 5 times. B) 10 times. C) 3 times. D) 100 times. Show Answer Correct Answer: A) 5 times. 8. Force the blood away from the heart with sufficient power to push the blood all the way back to the heart, includes left and right ventricle A) Ventricles. B) Four pulmonary veins. C) Inferior vena cava. D) Superior vena cava. Show Answer Correct Answer: A) Ventricles. 9. What type of tissue in the heart pumps blood throughout the body? A) Fatty tissue. B) Muscle tissue. C) Connective tissue. D) Nervous tissue. Show Answer Correct Answer: B) Muscle tissue. 10. After blood goes through the capillary bed in the systemic circulation loop, it enters into this vessel: A) Artery. B) Vein. C) Arteriole. D) Venule. Show Answer Correct Answer: D) Venule. 11. Needed substances are carried to the body cells by? A) Enzymes. B) Food. C) Water. D) Blood. Show Answer Correct Answer: D) Blood. 12. Occurs when the arteries which supply blood to the heart muscle become hardened and narrowed as a result of atherosclerosis A) Coronary artery disease. B) Arteriosclerosis. C) Plaque. D) Stroke. Show Answer Correct Answer: A) Coronary artery disease. 13. Blood is pumped from the left ventricle into ..... that lead to all parts of the body. A) Veins. B) Arteries. C) Valves. D) Atria. Show Answer Correct Answer: B) Arteries. 14. Most digestion takes place in this organ. It is really long. A) Small intestines. B) Large intestines. C) Esophagus. D) Pancreas. Show Answer Correct Answer: A) Small intestines. 15. Your blood type is the same as the type of ..... you have on the surface of your red blood cell A) Antigen. B) Antibody. Show Answer Correct Answer: A) Antigen. 16. This helps protect from harmful microorganisms that enter the mouth? A) Spleen. B) Tonsils. C) Veins. D) Arteries. Show Answer Correct Answer: B) Tonsils. 17. Human circulatory system is made up of which things? A) Heart, blood vessels and blood. B) Heart. C) Blood vessels. D) Blood. Show Answer Correct Answer: A) Heart, blood vessels and blood. 18. Arteries have A) "Thin" walls that carry oxygenated blood to the heart. B) "Thick" walls that carry oxygenated blood away from the heart. C) "Thick" walls that carry deoxygenated blood to the heart. D) "Thin" walls that carry deoxygenated blood away from the heart. Show Answer Correct Answer: B) "Thick" walls that carry oxygenated blood away from the heart. 19. Which is NOT a main blood type? A) C. B) A. C) B. D) O. Show Answer Correct Answer: A) C. 20. What are the "tiny doors" between chambers in the heart called? A) Flaps. B) Valves. C) Manholes. D) Passageways. Show Answer Correct Answer: B) Valves. ← 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