This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 73 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 73 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which system circulates between the heart and the lungs? A) Systemic. B) Pulmonary. C) Systolic. D) Diastolic. Show Answer Correct Answer: B) Pulmonary. 2. What is the role of plasma in the blood? A) Plasma is involved in the production of red blood cells. B) Carries nutrients, hormones, and waste products. C) Plasma is responsible for carrying oxygen to the body. D) Plasma helps in muscle movement. Show Answer Correct Answer: B) Carries nutrients, hormones, and waste products. 3. Which blood vessel walls are the thickest? A) Arteries. B) Veins. C) Capillaries. D) None of above. Show Answer Correct Answer: A) Arteries. 4. Carry oxygenated blood away from the heart? A) Arteries. B) Veins. Show Answer Correct Answer: A) Arteries. 5. ..... arteries and veins carry blood to the lungs and back to the heart. A) Pulmonary. B) Coronary. Show Answer Correct Answer: A) Pulmonary. 6. Which structure in the heart is responsible for pumping oxygenated blood into the systemic circulation? A) Right ventricle. B) Left atrium. C) Left ventricle. D) Right atrium. Show Answer Correct Answer: C) Left ventricle. 7. What do valves do? A) Open and shut. B) Prevent blood flowing in the wrong direction. C) Increase the pressure. D) Connect capillaries to veins. Show Answer Correct Answer: B) Prevent blood flowing in the wrong direction. 8. The carotid artery is found where? A) The foot. B) The groin. C) The wrist. D) The neck. Show Answer Correct Answer: D) The neck. 9. What wall separates the left side and right side of the heart? A) Ventricle. B) Atrium. C) Septum. D) The great wall. Show Answer Correct Answer: C) Septum. 10. A condition where deposits of fatty materials such as cholesterol form a "plaque" in the arteries which reduces blood flow. A) Atherosclerosis. B) Aortic stenosis. C) Aneurysm. D) Ventricular Septal Defect. Show Answer Correct Answer: A) Atherosclerosis. 11. Protect you from illnesses, diseases, viruses and bacterias. They are produced in the bone marrow. A) White blood cells. B) Red blood cells. C) Platelets. D) None of above. Show Answer Correct Answer: A) White blood cells. 12. A dome-shaped muscular organ responsible for the breathing mechanism in humans. A) Heart. B) Liver. C) Lungs. D) Diaphragm. Show Answer Correct Answer: D) Diaphragm. 13. Which organ squeezes and mixes your food into a mushy liquid? A) Mouth. B) Stomach. C) Large intestine. D) Small intestine. Show Answer Correct Answer: B) Stomach. 14. Alveoli A) The abnormal reduction in the number of red blood cells in the circulating blood. B) To clump together as in the antigen antibody reaction between red blood cells of two different blood types. C) A portion of a specimen used for testing. D) Tiny air sacs in the lungs where the exchange of oxygen and carbon dioxide takes place. Show Answer Correct Answer: D) Tiny air sacs in the lungs where the exchange of oxygen and carbon dioxide takes place. 15. What gas increases in the blood after gas exchange? A) Oxygen. B) Carbon dioxide. C) Hydrogen. D) Nitrogen. Show Answer Correct Answer: B) Carbon dioxide. 16. Blood traveling through the pulmonary circuit goes through the right side of the heart and out to the ..... A) Left side of the heart. B) Body. C) Lungs. D) Tricuspid valve. Show Answer Correct Answer: C) Lungs. 17. -Small lumen-Thick muscular wall-No valve A) Artery. B) Capillary. C) Vein. D) None of above. Show Answer Correct Answer: A) Artery. 18. Aorta A) NEED TO STUDY THIS ONE!!!!!!!!!!!. B) The large arterial trunk that carries blood from the heart to be distributed by branch arteries through the body. C) The first chamber to receive deoxygenated blood returning from the body, via the two venae cavae. D) Red blood cells that consists of a globin composed of four subunits each of which is linked to a heme molecule, that functions in oxygen transport. Show Answer Correct Answer: B) The large arterial trunk that carries blood from the heart to be distributed by branch arteries through the body. 19. The tiny oval shaped lymph structure located throughout the body are known as? A) Lymph nodes. B) Spleen. C) Lymph fluid. D) None of above. Show Answer Correct Answer: A) Lymph nodes. 20. Site of carbon dioxide and oxygen exchange (may have multiple answers) A) Arteries. B) Veins. C) Capillaries. D) Mucus. Show Answer Correct Answer: C) Capillaries. ← 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