This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 549 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 549 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. ..... are the smallest blood vessels and the functional unit of the circulatory system. A) Arteries. B) Veins. C) Capillaries. D) None of above. Show Answer Correct Answer: C) Capillaries. 2. The active protoplasm found in the center of the cell. A) Nucleus. B) Nerve. C) Cell. D) Cytoplasm. Show Answer Correct Answer: A) Nucleus. 3. What is the correct order of organization A) Tissues-cells-organs-organ systems-organism. B) Cell-tissue-organs-organ systems-organism. C) Organism-cells-tissues-organ systems-organism. D) Tissues-cells-organs-organ sytems-organism. Show Answer Correct Answer: B) Cell-tissue-organs-organ systems-organism. 4. A normal pulse is due to A) Arterial diastole. B) Arterial systole. C) Ventricular diastole. D) Ventricular systole. Show Answer Correct Answer: D) Ventricular systole. 5. ..... traps and filters out dust and particles. A) Lungs. B) Nose filter. C) Mouth. D) Cilia. Show Answer Correct Answer: D) Cilia. 6. How is the color of oxygenated and deoxygenated blood represented in the model? A) Both are red. B) Oxygenated is red, deoxygenated is blue. C) Both are blue. D) Oxygenated is blue, deoxygenated is red. Show Answer Correct Answer: B) Oxygenated is red, deoxygenated is blue. 7. What benefit do root hairs have on water uptake for a plant? A) Increase surface area and increase the speed at which water is absorbed. B) Reduce surface area and increase the speed at which water is absorbed. C) Increase surface area and reduce the speed at which water is absorbed. D) Reduce surface area and reduce the speed at which water is absorbed. Show Answer Correct Answer: A) Increase surface area and increase the speed at which water is absorbed. 8. Which vessel carries blood toward the heart? A) Artery. B) Capillary. C) Vein. D) Cup. Show Answer Correct Answer: C) Vein. 9. What part of the brain is responsible for conscious thought, judgement, memory, reasoning and will power? A) Cerebellum. B) Hypothalamus. C) Cerebrum. D) Thalamus. Show Answer Correct Answer: C) Cerebrum. 10. Contraction of the heart is done by the A) Epipericardium. B) Visceral pericardium. C) Pericardium. D) Myocardium. Show Answer Correct Answer: D) Myocardium. 11. There are four of these in the human heart ..... A) Capillaries. B) Neurons. C) Bones. D) Chambers. Show Answer Correct Answer: D) Chambers. 12. Of the 4 heart chambers, which chamber has the thickest wall? * A) Right atrium. B) Right ventricle. C) Left atrium. D) Left ventricle. Show Answer Correct Answer: D) Left ventricle. 13. What vocabulary word means the two upper chambers of the heart that receive blood that comes into the heart? A) Atrium. B) Ventricle. Show Answer Correct Answer: A) Atrium. 14. Twisted dilated veins resulting from overworked valves: A) Heart murmurs. B) Angina pectoris. C) Endocarditis. D) Varicose veins. Show Answer Correct Answer: D) Varicose veins. 15. These blood vessels have valves to prevent blood from flowing backwards. A) Veins. B) Arteries. C) Capillaries. D) Heart. Show Answer Correct Answer: A) Veins. 16. Which of the statement is correct?i. Blood comprises of 55% blood cells and 45% plasmaii. There are 3 types of blood cells:erythrocytes, leucocytes and plateletsiii. Both platelets and leucocytes have nucleus A) I and ii. B) I and iii. C) I only. D) Ii only. E) None of the above. Show Answer Correct Answer: D) Ii only. 17. The top number in a blood pressure refers to A) Septum. B) Systole. C) Diastole. D) Pulse. Show Answer Correct Answer: B) Systole. 18. What part of the brain connects the nervous system to the endocrine system? A) The brain stem. B) The spinal cord. C) The hypothalmus. D) The corpus callosum. Show Answer Correct Answer: C) The hypothalmus. 19. True or False:The blood vessels are arteries, veins, and capillaries. A) True. B) False. Show Answer Correct Answer: A) True. 20. Which of the following is the function of the circulatory system in animals? A) For respiration. B) To conduct photosynthesis more efficiently. C) Transport substances throughout the body using blood as a medium. D) To prevent constipation. Show Answer Correct Answer: C) Transport substances throughout the body using blood as a medium. ← 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