This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 525 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 525 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which part of the heart pumps the oxygen-riched blood to all parts of the body? A) Right ventricle. B) Left ventricle. C) Right atrium. D) Left atrium. Show Answer Correct Answer: B) Left ventricle. 2. In this type of system blood passes through the heart twice in one complete circuit. A) Single Circulatory System. B) Double Circulatory System. C) Pulmonary System. D) Double Pulmonary System. Show Answer Correct Answer: B) Double Circulatory System. 3. Which blood vessel has low pressure? A) Artery. B) Vein. C) Aorta. D) Capillary. Show Answer Correct Answer: D) Capillary. 4. After blood leaves the capillary beds surrounding the air sacs in the lungs, it is then: A) Oxygen poor. B) Oxygen rich. Show Answer Correct Answer: B) Oxygen rich. 5. The walls of an artery are thicker and more elastic than the walls of a vein.Why is it important for the walls of an artery to be thicker and more elastic? A) To reduce cholesterol levels in the blood. B) To resist the higher pressure from the blood. C) To stop the blood from going into the capillaries. D) To prevent blood from flowing backward in the vessels. Show Answer Correct Answer: B) To resist the higher pressure from the blood. 6. Find the correct statement about blood clotting A) An injury or a trauma stimulates the platelets in the blood to release certain factors which activate the mechanism of coagulation. B) Prothrombin is formed from inactive substance present in the plasma called thrombin. C) Fibrins are dissolved in the plasma. D) Fibrinogens are network in which blood cells are trapped to form clot. Show Answer Correct Answer: A) An injury or a trauma stimulates the platelets in the blood to release certain factors which activate the mechanism of coagulation. 7. These arteries get smaller and smaller arteries until they enter the smallest of vessels, ..... This is where the exchange of gases, nutrients, and wastes occurs. A) Aorta. B) Capillaries. C) Heart. D) Lungs. Show Answer Correct Answer: B) Capillaries. 8. The 2 upper chambers of the heart are the ....., which receive blood entering the heart. A) Ventricle. B) Atria. C) Artery. D) None of above. Show Answer Correct Answer: B) Atria. 9. Which blood component is responsible for blood clotting to prevent bleeding? A) Platelets. B) White blood cells. C) Red blood cells. D) Plasma. Show Answer Correct Answer: A) Platelets. 10. The normal human pulse rate is A) 60-100. B) 70-120. C) 80-120. D) 80-100. Show Answer Correct Answer: A) 60-100. 11. Which WBC has a large, kidney-shaped nucleus? A) Eosinophils. B) Lymphocytes. C) Monocytes. D) Basophils. Show Answer Correct Answer: C) Monocytes. 12. Cellular Respiration A) Chemical reactions that transform energy in food to usable energy. B) Intakes oxygen into the blood and carbon dioxide out of the body. C) A large dome shaped muscle that plays an important role in breathing. D) Movement of air into and out of the lungs. Show Answer Correct Answer: A) Chemical reactions that transform energy in food to usable energy. 13. During systole, what happens to the pressure in the arteries? A) The pressure is low. B) The pressure is high. C) The pressure doesn't change. D) None of above. Show Answer Correct Answer: B) The pressure is high. 14. An ECG that shows a particularly FAST heart beat is defined as ..... A) Bradycardia. B) Tachycardia. C) Atrial Fibrillation. D) High Blood Pressure. Show Answer Correct Answer: B) Tachycardia. 15. Lymph ..... Transports O2 to brainb) Transports CO2 to lungsc) Returns interstitial fluid to bloodd) Returns RBCs and WBCs to lymph nodes A) Transport O2 to brain. B) Transport CO2 to lungs. C) Return intersitial fluid to blood. D) Returns RBCs and WBCs to lymph nodes. Show Answer Correct Answer: C) Return intersitial fluid to blood. 16. Breathing air out of lungs A) Inhalation. B) Exhalation. Show Answer Correct Answer: B) Exhalation. 17. What chemically breaks down food into smaller molecules? A) Teeth. B) Muscles of the stomach. C) Enzymes. D) None of above. Show Answer Correct Answer: C) Enzymes. 18. Connective tissue specialized for fat storage that includes yellow bone marrow; also insulates the body against heat loss, provides fuel reserves for energy and provides a cushion around certain structures (examples:heart, kidneys and some joints). A) Adipose tissue. B) Liquid tissue. C) Muscle. D) Gland. Show Answer Correct Answer: A) Adipose tissue. 19. Which type of blood vessel functions to exchange materials between the blood and cells? A) Vessels. B) Capillaries. C) Arteries. D) Veins. Show Answer Correct Answer: B) Capillaries. 20. Match the following Blood Vessel to their definitionVeins A) Carry blood to your organs. B) The Inner tubing that connects organs together. C) Carry Blood to the heart. D) Heart. Show Answer Correct Answer: C) Carry Blood to the heart. ← 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