This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 600 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 600 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What's the #1 cause of death in America? A) Cancer. B) Heart Disease. C) Alzheimer's Disease. D) Diabetes. Show Answer Correct Answer: B) Heart Disease. 2. All of the following are functions of the circulatory system EXCEPT? A) Thermoregulation. B) Transport of oxygen, carbon dioxide, nutrients, and waste products. C) Hematopoiesis. D) Transport of hormones and antibodies. Show Answer Correct Answer: A) Thermoregulation. 3. Which blood vessels pump blood into the left atrium? A) Pulmonary veins. B) Aorta. C) Pulmonary arteries. D) Vena cava. Show Answer Correct Answer: A) Pulmonary veins. 4. What is the effect of blood volume on blood pressure? A) Lower blood volume causes lower blood pressure. B) Higher blood volume causes lower blood pressure. C) Lower blood volume causes higher blood pressure. D) There's no correlation between blood volume & blood pressure. Show Answer Correct Answer: A) Lower blood volume causes lower blood pressure. 5. Carries oxygen-poor blood from the upper body to the heart A) Superior vena cava. B) Inferior vena cava. Show Answer Correct Answer: A) Superior vena cava. 6. The plasma is responsible for the collection of waste materials throughout the body. A) True. B) False. Show Answer Correct Answer: A) True. 7. The children, crying and exhausted, were guided out of the collapsed mine. In the above sentence ..... A) Crying is a gerund and exhausted is a participle. B) Crying is a past participle and exhausted is a present participle. C) Both crying and exhausted are present participles. D) Crying is a present participle and exhausted is a past participle. Show Answer Correct Answer: D) Crying is a present participle and exhausted is a past participle. 8. The liquid part of blood is called A) Red blood cells. B) White blood cells. C) Plasma. D) Platelets. Show Answer Correct Answer: C) Plasma. 9. Oxygen is a waste made by cells. A) True. B) False. Show Answer Correct Answer: B) False. 10. What is the main issue with the blood filled in the atrium? A) Low oxygen levels. B) High nutrient levels. C) Lack of wastes. D) High carbon dioxide levels. Show Answer Correct Answer: A) Low oxygen levels. 11. The pacemaker of the heart is also known as the ..... A) AV node. B) Because of the difference. C) Purkinje fibres. D) Bundle of His. Show Answer Correct Answer: B) Because of the difference. 12. In which direction does blood flow in veins? A) Away from the heart. B) Towards the heart. C) Both directions. D) Upwards. Show Answer Correct Answer: B) Towards the heart. 13. How many kinds of blood cells are there? A) 4. B) 2. C) 5. D) 3. Show Answer Correct Answer: D) 3. 14. The top chamber of the heart is called the ..... * A) Aorta. B) Septum. C) Atrium. D) Ventricle. Show Answer Correct Answer: C) Atrium. 15. Define Heart A) The muscular organ of an animal that pumps blood throughout the body. B) The System that transports blood and other fluids throughout the body. C) A chamber in an organism's heart that pumps blood out of the body. D) A blood vessesl that carries blood away from the body. Show Answer Correct Answer: A) The muscular organ of an animal that pumps blood throughout the body. 16. Blood vessel that exchanges oxygen for waste products: A) Artery. B) Vein. C) Capillary. D) None of above. Show Answer Correct Answer: C) Capillary. 17. What is the shape of a human heart? A) Heart. B) Sphere. C) Cube. D) Conical. Show Answer Correct Answer: D) Conical. 18. A valve in the heart that guards the opening between the left atrium and the left ventricle; prevents the blood in the ventricle from returning to the atrium. Alternative name is bicuspid valve. A) Mitral valve. B) Tricuspid valve. C) Pulmonary valve. D) Aortic valve. Show Answer Correct Answer: A) Mitral valve. 19. The smallest solid components of blood that are composed of fragments of megakaryocytes are called A) Leukocytes. B) Thrombocytes. C) Erythrocytes. D) Plasmas. Show Answer Correct Answer: B) Thrombocytes. 20. State the pathway that oxygenated blood takes from the lungs to the working muscles A) Enters right atrium via vena cava, enters right ventricle via triscupid valve, exits pulmonary artery into the lungs for gaseous exchange. B) Enters left atrium via pulmonary vein, enters left ventricle via bicuspid (atrio-ventricular valve), exits left ventricle via aortic (semi-lunar) valve, aorta carries blood away from the heart to the body. Show Answer Correct Answer: B) Enters left atrium via pulmonary vein, enters left ventricle via bicuspid (atrio-ventricular valve), exits left ventricle via aortic (semi-lunar) valve, aorta carries blood away from the heart to the body. ← 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