This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 419 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 419 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following is responsible for the reduced blood flow to the heart? A) Chlorine. B) Sodium. C) Fluorine. D) Calcium. Show Answer Correct Answer: D) Calcium. 2. How does the heart rate compare between women and men? A) Women have a higher heart rate than men. B) Men have a higher heart rate than women. C) Both have the same heart rate. D) The heart rate frequencies of the two cannot be compared. Show Answer Correct Answer: A) Women have a higher heart rate than men. 3. Human Heart Beats How many Times in a minute? A) 50 times. B) 72 times. C) 100 times. D) 200 times. Show Answer Correct Answer: B) 72 times. 4. Characteristics of artery A) Thin. B) Stiff. C) Thick and elastic layer. D) Rigid. Show Answer Correct Answer: C) Thick and elastic layer. 5. Oxyg poor A) Pulmonary artery. B) Left atrium. C) Right atrium. D) Mitral valve/bicuspid. E) Aortic valve. Show Answer Correct Answer: C) Right atrium. 6. Oxygen from the air enters the blood stream at what location? A) Cardiac Notch. B) Pulmonary Vein. C) Alveoli. D) Paranasal Sinuses. Show Answer Correct Answer: C) Alveoli. 7. What makes the LUB-DUB sound? A) Your veins. B) Your arteries. C) Your capillaries. D) Your valves in the heart. Show Answer Correct Answer: D) Your valves in the heart. 8. What happens to carbon dioxide during exhalation? A) It is transported throughout the body. B) It is unloaded into the lungs. C) It is expelled from the body. D) It is converted into oxygen. Show Answer Correct Answer: C) It is expelled from the body. 9. Select the three parts of our circulatory system. A) Esophagus, trachea and heart. B) Arteries, veins and heart. C) Nerves, spinal chord and heart. D) None of above. Show Answer Correct Answer: B) Arteries, veins and heart. 10. Through what blood vessel does oxygen poor blood LEAVE the heart to get blood from the lungs? A) Pulmonary artery. B) Pulmonary vein. C) Aorta. D) Vena cava. Show Answer Correct Answer: A) Pulmonary artery. 11. Which of the following structures carry blood to the heart? A) Arteries. B) Veins. C) Capillaries. D) Vena Cava. Show Answer Correct Answer: B) Veins. 12. The process of hemostasis (forming a blood clot) is completed by which type of cells? A) Thrombocytes. B) Agranulocytes. C) Granulocytes. D) Erythrocytes. Show Answer Correct Answer: A) Thrombocytes. 13. Which of the following define diastole and systole A) Systole is the contraction of the heart and diastole is the relaxation of the heart. B) Diastole is the contraction of the heart and systole is the relaxation of the heart. C) Diastole and systole are both contractions of the heart. D) Diastole and systole are both relaxation phases of the heart. Show Answer Correct Answer: A) Systole is the contraction of the heart and diastole is the relaxation of the heart. 14. What do all cells need in order to function? A) Plasma. B) Oxygen. C) Carbon dioxide. D) Platelet. Show Answer Correct Answer: B) Oxygen. 15. Keeps blood flowing in one direction A) Valve. B) Vein. C) Artery. D) Chamber. Show Answer Correct Answer: A) Valve. 16. The inner most layer of arteries are made of: A) Nerve tissue. B) Elastic fiberse. C) Muscle. D) Endothelium. Show Answer Correct Answer: D) Endothelium. 17. Which part of the blood is part of your immune system and is responsible for fighting disease? A) Plasma. B) Red Blood Cells. C) White Blood Cells. D) Platelets. Show Answer Correct Answer: C) White Blood Cells. 18. Diffusion is the natural movement of molecules from: A) Areas of low concentration to areas of high concentration. B) Areas of high concentration to areas of low concentration. C) Cold to hot environments. D) Gaseous to liquid environments. Show Answer Correct Answer: B) Areas of high concentration to areas of low concentration. 19. Which heart chambers has the thickest wall? A) Left atrium. B) Right atrium. C) Left ventricle. D) Right ventricle. Show Answer Correct Answer: C) Left ventricle. 20. It's a VEIN in the leg A) Femoral vein. B) Femoral artery. C) Carotid artery. D) Jugular vein. E) Vena cava. Show Answer Correct Answer: A) Femoral vein. ← 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