This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 314 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 314 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the purpose of the ostium in an open circulatory system? A) To pump out hemolymph. B) To draw hemolymph back into the heart. Show Answer Correct Answer: B) To draw hemolymph back into the heart. 2. What is the primary organ of the respiratory system? A) Heart. B) Lungs. C) Teeth. D) Diaphragm. Show Answer Correct Answer: B) Lungs. 3. After blood leaves the capillary beds in the systemic circulation loop, it is then: A) Oxygen rich. B) Oxygen poor. Show Answer Correct Answer: B) Oxygen poor. 4. The walls of the alveoli and capillaries are permeable. What does this mean? A) Substances can pass through them. B) They are made of muscle. C) They are located throughout the body. D) They are made of bone. Show Answer Correct Answer: A) Substances can pass through them. 5. Human blood vessels are A) Arteries, capillaries, and atria. B) Ventricles, atria and pulmonary veins. C) Capillaries, artries, and veins. D) Veins, artries, and aorta. Show Answer Correct Answer: C) Capillaries, artries, and veins. 6. The three great vessels are composed of the following, except: A) Inferior Vena Cava. B) Superior Vena Cava. C) Aorta. D) Coronary Vessels. Show Answer Correct Answer: D) Coronary Vessels. 7. Blood pressure is a measure of: A) PRESSURE IN THE ARTERY WHILE THE HEART IS CONTRACTING AND WHEN IT IS RELAXING. B) PRESSURE IN THE ARTERY WHILE THE HEART IS AT REST. C) PRESSURE WHILE THE HEART IS CONTRACTING. D) PRESSURE IN THE ARTERY WHEN THE HEART IS RELAXING. Show Answer Correct Answer: A) PRESSURE IN THE ARTERY WHILE THE HEART IS CONTRACTING AND WHEN IT IS RELAXING. 8. What type of circulation sends blood from the heart to the body and back? A) Pulmonary circulation. B) Systemic circulation. C) Arterial circulation. D) Venous circulation. Show Answer Correct Answer: B) Systemic circulation. 9. It is a phase of the cardiac cycle which occurs when the heart CONTRACTS to pump blood out. A) SYSTOLE. B) DIASTOLE. C) HYPERBOLE. D) ARTERIOLE. Show Answer Correct Answer: A) SYSTOLE. 10. Which blood vessels have thick walls.why A) Veins, blood flows at high pressure. B) Veins, which carry deoxygenated blood. C) Arteries, which carry oxygenated blood. D) Arteries, blood flows at high pressure. Show Answer Correct Answer: D) Arteries, blood flows at high pressure. 11. Blood moves from the left atrium to the left ventricle through the ..... A) Mitral valve. B) Tricuspid valve. C) Aortic valve. D) None of above. Show Answer Correct Answer: A) Mitral valve. 12. Second part of Cardiac Conduction System:This structure receives a signal and passes it on to the Bundle of His A) Purkinje fibers. B) Atrioventricular (AV) node. C) Sinoatrial (SA) Node. D) None of above. Show Answer Correct Answer: B) Atrioventricular (AV) node. 13. A cardiac cycle consists of A) Systole, diastole. B) Pulmonary, systemic. C) Cardiac, cycle. D) Aorta, vena cava. Show Answer Correct Answer: A) Systole, diastole. 14. The flap of tissue at the top of the Larynx which keeps food and liquids out of the rest of your respiratory system. A) Pharynx. B) Larynx. C) Trachea. D) Epiglottis. Show Answer Correct Answer: D) Epiglottis. 15. What prevents backflow of blood in veins? A) Valves. B) Thick walls. C) Capillaries. D) Muscles. Show Answer Correct Answer: A) Valves. 16. Which of the following correlate with the sounds of the cardiac cycle heard with a stethoscope? A) Atrial contraction. B) The opening of valves. C) The closing of valves. D) Electrical impulse conduction. Show Answer Correct Answer: C) The closing of valves. 17. Cardiac muscle cells will have more mitochondria cells than any other human cells because A) They produces the most protein. B) They are red and mitochondria are red. C) They need the most energy. D) They need to produce sweat when the body overheats. Show Answer Correct Answer: C) They need the most energy. 18. Why is coronary circulation necessary? A) Because blood needs to be pushed throughout the entire body. B) Because the heart itself needs nourishment. C) Because the scalp requires an exceptional amount of nourishment. D) None of above. Show Answer Correct Answer: B) Because the heart itself needs nourishment. 19. Blood is a ..... that circulates around through the body. A) Plasma. B) Tissue. C) Marrow. D) Rbc. Show Answer Correct Answer: B) Tissue. 20. Why is blood important? A) It carries important nutrients, oxygen and protection. B) Because it is red and red is pretty cool. C) Blood is not important. D) None of above. Show Answer Correct Answer: A) It carries important nutrients, oxygen and protection. ← 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