This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 42 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 42 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The ..... pumps blood through a network of arteries, veins and capillaries. A) Lungs. B) Heart. C) Liver. D) Kidneys. Show Answer Correct Answer: B) Heart. 2. The main function of the red blood cells is to A) Allow gases to exchange. B) Fight infection. C) Give blood its color. D) Help clot blood. Show Answer Correct Answer: A) Allow gases to exchange. 3. Where does the blood collect oxygen? A) From the trachea. B) From the kidneys. C) From the lungs. D) None of above. Show Answer Correct Answer: C) From the lungs. 4. What occurs during the formation of fibrinogen to fibrin? A) Nothing. B) Thrombin is in the form of calcium irons and acts as an enzyme. C) Something Major. D) WBC's start to move faster. Show Answer Correct Answer: B) Thrombin is in the form of calcium irons and acts as an enzyme. 5. True or False:Gaseous exchange only takes place in the pulmonary system? A) True. B) False. Show Answer Correct Answer: B) False. 6. Arteries are thick blood vessels that carry blood ..... your heart A) Towards. B) Away from. Show Answer Correct Answer: B) Away from. 7. What do we call it when the body obtains and uses oxygen and removes carbon dioxide and water as waste? A) Circulation. B) Respiration. C) Digestion. D) None of above. Show Answer Correct Answer: B) Respiration. 8. When the left ventricle contracts, blood is pumped to which part? A) Pulmonary veins. B) Vena cava. C) Aorta. D) Pulmonary artery. Show Answer Correct Answer: C) Aorta. 9. The part of the blood that carries oxygen is called A) Red blood cells. B) White blood cells. Show Answer Correct Answer: A) Red blood cells. 10. A boy accidentally cut his finger. the blood clots occur slowly. What caused the blood to clot slowly? A) Lack of vitamin D in his meal. B) Lack of vitamin K in his meal. C) The blood of the boy is infected with pathogens. D) The blood of the boy flow with high pressure at the wound. Show Answer Correct Answer: B) Lack of vitamin K in his meal. 11. This condition creates a clicking sound at the end of a contraction. A) Heart Murmur. B) Regurgitation. C) Mitral valve prolapse. D) Myocardial infarction. Show Answer Correct Answer: C) Mitral valve prolapse. 12. Which chamber of the heart receives blood returning from the body? A) Right atrium. B) Left atrium. C) Right ventricle. D) Left ventricle. Show Answer Correct Answer: A) Right atrium. 13. Which is the thickest chamber of the heart? A) Left Atrium. B) Left Ventricle. C) Right Atrium. D) Right Ventricle. Show Answer Correct Answer: B) Left Ventricle. 14. In which of the following cases Agglutination is most likely to occur-1-Blood group B+ gives blood to Blood group AB+.2-Blood group B+ gives blood to Blood group B-.3-Blood group AB-gives blood to Blood group AB+.4-Blood group O+ gives blood to Blood group AB+. A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: B) 2. 15. What atrium receives oxygenated blood from the lungs through 4 pulmonary veins (Two on the right and two on the left)? A) Left atrium. B) Right atrium. C) Tunica media. D) Pericardium. Show Answer Correct Answer: A) Left atrium. 16. How many times can our burns arteries and capillaries circle the earth A) 2. B) 5.2. C) 2.5. D) 5. Show Answer Correct Answer: C) 2.5. 17. This second group of specialized cells is located at the lower back section of the interatrial septum to relay the electrical impulse to muscle cells of the ventricles completing one full heartbeat. A) Bundle of His. B) Atrioventricular Node (AV). C) Sinoatrial Node (SA). D) Beats per Minute (BPM). Show Answer Correct Answer: B) Atrioventricular Node (AV). 18. The chamber of the heart that receives deoxygenated (very little oxygen) from the body's cells. A) Plasma. B) Pulmonary valve. C) Right atrium. D) Right ventricle. Show Answer Correct Answer: C) Right atrium. 19. When the heart contracts its called ..... A) Systole. B) Diastole. C) Hypertension. D) Hypotension. Show Answer Correct Answer: A) Systole. 20. This is the thickest of the blood vessels. It leads away from the heart. A) Veins. B) Capillaries. C) Arteries. D) None of above. Show Answer Correct Answer: C) Arteries. ← 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