This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 689 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 689 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What structure does number 2 represent? A) Vena cava. B) Aorta. C) Pulmonary artery. D) Valve. Show Answer Correct Answer: A) Vena cava. 2. The lungs pump the blood that transports the inhaled oxygen to every cell of the body. A) True. B) False. Show Answer Correct Answer: B) False. 3. Oxygen-poor blood enters the lungs $\rightarrow$ Excess carbon dioxide and water are expelled $\rightarrow$ Blood picks up oxygen $\rightarrow$ Oxygen-rich blood returns to the heart A) Systemic Circulation. B) Pulmonary Circulation. Show Answer Correct Answer: B) Pulmonary Circulation. 4. The center pumping organ of the body A) Heart. B) Liver. C) Intestine. D) Blood. Show Answer Correct Answer: A) Heart. 5. Which of the following is NOT a function of the stem of a plant? A) Hold the leaves toward the sun. B) Hold the petals up for pollinators. C) Provide a way for xylem to transport food. D) Support the plant. Show Answer Correct Answer: C) Provide a way for xylem to transport food. 6. The Machine used to check the Blood Pressure is called A) Sphygmonamometer. B) Trygmonamometer. C) Sphygmomanometer. D) None of These. Show Answer Correct Answer: D) None of These. 7. A ..... occurs when a blood vessel in the heart is blocked. A) Heart attack. B) Stroke. C) Hypertension. D) Atherosclerosis. Show Answer Correct Answer: A) Heart attack. 8. The ..... side of your heart pumps oxygen-poor blood through your lungs to pick up oxygen A) Left. B) Right. Show Answer Correct Answer: B) Right. 9. Composed of concentrically arranged smooth muscle fibers. A) Intimate Tunic. B) Tunica Media. C) Tunica Adventitia. D) None of above. Show Answer Correct Answer: B) Tunica Media. 10. The specialized muscles which are present only in the heart are? A) Voluntary muscles. B) Involuntary muscles. C) Cardiac muscles. D) Contracting muscles. Show Answer Correct Answer: C) Cardiac muscles. 11. The pulse wave is caused by: A) A. Atrial systole. B) A. Atrial diastole. C) Left ventricular systole. D) A. Right ventricular systole . Show Answer Correct Answer: C) Left ventricular systole. 12. Veins are? A) Capillaries. B) Arteries. C) Vein. D) Arteries. Show Answer Correct Answer: C) Vein. 13. If the heart beats faster: A) Heart contraction time shortens. B) Break time remains unchanged. C) The amount of blood transported in the vessels is greater. D) Cardiac relaxation time is shortened. Show Answer Correct Answer: A) Heart contraction time shortens. 14. What vocabulary word means the liquid part of blood? A) Blood. B) Plasma. C) Platelets. D) None of above. Show Answer Correct Answer: B) Plasma. 15. Flow of blood from the beginning of one heartbeat to the beginning of the next A) Heart Rate. B) Cardiac Cycle. C) Stroke Volume. D) Cardiac Output. Show Answer Correct Answer: B) Cardiac Cycle. 16. What is the primary role of platelets? A) Transporting oxygen. B) Carrying dissolved substances. C) Blood clotting and preventing bleeding. D) Supporting immune function. Show Answer Correct Answer: C) Blood clotting and preventing bleeding. 17. The heart is a powerful organ made up of: A) Bones. B) Blood. C) Muscles. D) None of above. Show Answer Correct Answer: C) Muscles. 18. Where does the journey of blood begin? A) In the heart. B) In the lungs. C) In the brain. D) In the arms. Show Answer Correct Answer: A) In the heart. 19. What is the name of the chamber that receives the blood returning from the lungs? A) Right ventricle. B) Left ventricle. C) Right atrium. D) Left atrium. Show Answer Correct Answer: D) Left atrium. 20. A fluid that surrounds the cells of most tissues- A) Plasma. B) Blood. C) Pericardium fluid. D) Tissue fluid. Show Answer Correct Answer: D) Tissue fluid. ← 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