This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 334 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 334 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The body's defense against infection from various diseases, including..... A) Blood function (6). B) Blood components. Show Answer Correct Answer: A) Blood function (6). 2. These vessels carry blood away from the heart and to the body's cells. A) Veins. B) Capillaries. C) Arteries. D) Tubes. Show Answer Correct Answer: C) Arteries. 3. The structure that prevents backflow of blood in the heart are known as A) Ventricles. B) Valves. C) Buttons. D) Pulses. Show Answer Correct Answer: B) Valves. 4. In which chamber of the heart does oxygenated blood enter from the lungs? A) Left atrium. B) Left ventricle. C) Right atrium. D) Right ventricle. Show Answer Correct Answer: A) Left atrium. 5. Cardiac arrest is caused when the ..... electrical system malfunctions: A) Heart's. B) Lung's. C) Brain's. D) Gallbladder. Show Answer Correct Answer: A) Heart's. 6. Blood full of oxygen will be the color A) Green. B) Blue. C) Red. D) Black. Show Answer Correct Answer: C) Red. 7. Blood in mammals is contains white blood cells (leukocytes) that A) Contain haemoglobin that binds and transports oxygen and carbon dioxide. B) Play roles in the immune system such as engulfing pathogens and producing antibodies. C) Are fragments of cells that prevent blood loss and ensure that blood clots. D) Contains dissolved ions, gasses, proteins and hormones. Show Answer Correct Answer: B) Play roles in the immune system such as engulfing pathogens and producing antibodies. 8. The following are the three most important parts of circulatory system, EXCEPT ONE. A) Blood. B) Heart. C) Blood vessel. D) Stomach. Show Answer Correct Answer: D) Stomach. 9. Which type of blood vessel has valves to keep the blood moving in the right direction? A) Arteries. B) Veins. C) Capillaries. D) All blood vessels. Show Answer Correct Answer: B) Veins. 10. Function of left atrium A) Delivers blood to the right ventricle through the tricuspid valve. B) Delivers blood to the left ventricle through the bicuspid valve. C) Delivers blood to the left ventricle through the tricuspid valve. D) Delivers blood to the right ventricle through the bicuspid valve. Show Answer Correct Answer: B) Delivers blood to the left ventricle through the bicuspid valve. 11. What is the role of platelets in the blood clotting process? A) Transporting oxygen. B) Producing antibodies. C) Forming clots. D) Regulating body temperature. Show Answer Correct Answer: C) Forming clots. 12. Cells use oxygen for energy, and the waste product is ..... A) Water. B) Carbon dioxide. C) Nitrogen. D) Glucose. Show Answer Correct Answer: B) Carbon dioxide. 13. Patient RF, upon seeing her crush, manifests a heart rate of 120 bpm. This phenomenon is commonly coined as " ..... ". A) Myocardia. B) Bradycardia. C) Tachycardia. D) Medicardia. Show Answer Correct Answer: C) Tachycardia. 14. Delivers oxygen to your body cells. A) White blood cell. B) Red blood cell. C) Respiratory system. D) Lungs. Show Answer Correct Answer: B) Red blood cell. 15. The main artery supplying oxygenated blood at high pressure to all tissues and organs in the body is ..... A) Pulmonary artery. B) Hepatic artery. C) Aorta. D) Vena cava. Show Answer Correct Answer: C) Aorta. 16. Large blood circulation A) Heart (left ventricle) $\rightarrow$ all body tissues $\rightarrow$ heart (right atrium). B) Heart (right ventricle) $\rightarrow$ lungs $\rightarrow$ heart (left atrium). Show Answer Correct Answer: A) Heart (left ventricle) $\rightarrow$ all body tissues $\rightarrow$ heart (right atrium). 17. If a person has coronary heart surgery the heart is cut on to bypass vessels that are clogged, what is the acronym for the surgery? A) BAG. B) CAB. C) CABG. D) BAG. Show Answer Correct Answer: C) CABG. 18. MUSCULAR SYSTEM:What is the purpose of a synergist A) Stabilise the muscle. B) Counteract the working muscle. C) Assists the prime mover. D) Fixate a muscle to bone. Show Answer Correct Answer: C) Assists the prime mover. 19. What is the meaning of "pressure" ? A) Press. B) Pressure. C) Render. D) None of above. Show Answer Correct Answer: B) Pressure. 20. What is the main part of circulatory system? A) Heart. B) Mouth. C) Lungs. D) Blood. Show Answer Correct Answer: A) 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