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* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
1. Which of the following statements about arteries is FALSE? a. The blood pressure in arteries is higher than that in the veins. b. Arteries have thick walls that contain layers of muscle and connective tissue c. Arteries have one-way valves to prevent blood from flowing backwards d. Arteries contain only oxygenated blood e. All of the above 8. Rheumatic fever is a bacterial disease that can result in degeneration of heart valves. That would cause a. slower heartbeat b. uncoordinated attraction of ventricles c. faster heart beat d. backfire of blood from ventricle to an atrium 2. The aorta a. is the largest artery b. is the largest vein c. contains blood with low pressure d. connects right and left ventricles 9. Which statement is NOT true? a. Plasma is primarily water. b. Red blood cells carry oxygen. c. White blood cells defend the body against disease. d. Platelets are large cells that aid in blood clotting. 3. Which set of chambers supplies blood to the pulmonary circulation? a. The atria b. The ventricles c. The right atrium and right ventricle d. The left atrium and left ventricle 10. If a person weighed 100 pounds, what would be the weight of their blood? a. 5 to 6 pounds b. 8 pounds c. 10 pounds d. 12 pounds 4. Which heart chamber is the most muscular? a. The right atrium b. The left atrium c. The right ventricle d. The left ventricle 11. Red blood cells constitute _____ of the total blood volume in females. a. 30% b. 35% c. 40% d. 45% e. 50% 5. The left ventricle is more muscular than the right ventricle because: a. it must push the blood through the pulmonary circulation. b. it must pass the blood through the systemic circulation. c. it must push against gas pressure in the lungs. d. both b and c are correct. 6. In a mammal, blood with a low oxygen content enters the __________ of the heart. a. right atrium b. right ventricle c. left atrium d. left ventricle e. aorta 7. Ventricles force blood directly into a. Veins b. Arteries c. Capillaries d. Arterioles e. Venules 12. If you remove red blood cells, white blood cells and platelets from blood you have a. salty water b. plasma c. lymph d. albumin 13. The maximum number of molecules of oxygen that can bind with one molecule of human hemoglobin is? a. 1 b. 2 c. 3 d. 4 e. 5 14. How long does the average red blood cell live? a. 90 days b. 100 days c. 120 days d. 150 days e. It depends upon the amount of oxygen and the amount of hemoglobin the cell carries. e. 15. Return of blood to the heart in the systemic venous circulation is driven primarily by a. contractions of the left auricle b. muscles squeezing blood through the veins c. ciliated cells lining the inside of the veins d. all of these 16. Erythropoietin a. is produced by the kidneys. b. is released in response to high carbon dioxide or low oxygen levels in the blood. c. is only released in response to hemorrhaging. d. stimulates the spleen to release more red blood cells. 17. Which blood constituent makes up more of the volume of blood? a. Red blood cells b. Plasma c. White blood cells d. Blood proteins e. They each constitute about 25% of the total volume. 18. Erythrocytes are produced in the a. bone marrow b. liver c. spleen d. heart 19. Plasma that leaks out of the blood in the capillary beds is returned to the venous circulation by a. the small intestine b. suppressor B cells c. the lymphatic system d. the inflammatory response 20. Most of the plasma is a. Protein b. Salt c. Cells d. Gases e. Water 21. Approximately 99% of blood cells are involved in a. Immunity b. Transporting oxygen c. Eating invaders d. Amoeba-like activities Entering and leaving the blood stream 22. Which of the following is NOT true of hemoglobin? It a. Is found in all blood cells b. Carries oxygen c. Carries carbon dioxide d. Contains iron e. Is red 23. Females need more dietary iron than males because a. They have more red blood cells. b. They have less bone marrow. c. They lose iron during menstruation. d. They have a larger volume of blood. e. They are less able to absorb iron. 24. Athletes such as long distance runners like to train at high altitudes because the lack of oxygen there stimulates the a. Body to produce more lung tissue b. Bone marrow to make more erythrocytes c. Muscles to contract aerobically d. Muscles to contract more strongly e. Capillaries to diffuse oxygen more readily 25. Some athletes use "blood doping"ƒƒadding RBC's to thin blood prior to competition. This would a. make heart beat faster b. increase O2 delivery to muscles c. decrease blood pressure d. change blood type 26. WBC's a. b. c. d. carry O2 in blood protect body from microbes are formed in the spleen clot blood 27. Which is the correct sequence of blood vessels from the heart through the body and back to the heart? a. Veins venules capillaries arterioles arteries b. Arterioles arteries capillaries veins venules c. Arteries arterioles veins venules capillaries d. Veins venules arteries arterioles capillaries e. Arteries arterioles capillaries venules veins 28. When your physician takes your pulse, she is feeling the expansion and contraction of your a. Arteries or arterioles b. Capillaries c. Veins or venules d. Both a and c are correct 29. Which is smallest: a. Artery b. Arteriole c. Capillary d. Venule e. Vein 30. You are about to give blood for the first time. While watching everyone else, you become pale and have to sit down before you faint. The vessels that constricted, producing this pallor are a. Arteries b. Arterioles c. Capillaries d. Venules e. Veins 31. Which of the types of blood vessels is directly involved in the exchange of materials between blood and tissues? a. Arteries b. Arterioles c. Capillaries d. Lymphatics e. Veins 32. What happens to the speed of blood as it passes through the capillaries? a. Increases slightly b. Decreases slightly c. Increases greatly d. Drops almost to zero e. It depends on the location of the capillaries 33. The role of valves in the veins is to a. Keep the blood from flowing backward when the veins are squeezed by the skeletal muscles b. Push the blood upward toward the heart c. Slow blood flow in the veins so that the blood can move more slowly in the capillaries d. Block the flow of blood to the heart until it has time to contract again e. Push the blood back toward the capillaries so that all the oxygen can be removed 34. Accumulation of cell waste would cause nearby precapillary sphincters to a. Relax b. Contract c. Lengthen d. Shorten e. It would have no effect on precapillary sphincters. 35. As you sit here taking this test, you would expect the precapillary sphincters in your little toe to be __________ compared with those in the hand you are using to write with. a. Longer b. Shorter c. More open d. Less open e. Open about the same 36. In what way do lymph capillaries differ from blood capillaries? Lymph capillaries a. Contain red blood cells b. Have a wall of only one cell layer c. Begin with blind ends throughout interstitial fluid d. Are made by lymphocytes e. Contain plasma 37. Which statement is NOT true? a. Lymphatic vessels resemble veins. b. The lymphatic system returns fluids to the blood. c. The lymphatic system transports carbohydrates from the small intestine to the blood. d. The lymphatic system helps defend the body against disease. 38. Which of the following is NOT part of the lymphatic system? a. Thymus b. Thyroid c. Spleen d. All of the above are part of the lymphatic system. e. None of the above are part of the lymphatic system. 39. In an average person, how much fluid leaves the capillaries per day? a. 1 liter b. 2 liters c. 3 liters d. 4 liters e. 5 liters 40. Which of the following is delivered from the small intestine to the bloodstream through the lymphatic system? a. Amino acids b. Proteins c. Carbohydrates d. Lipids 41. When interstitial fluid enters the lymphatic system, it is known as a. Plasma b. Intrastitial fluid c. Globulin d. Lymph e. Macrophage 42. Which of the following is NOT a function of the lymphatic system? a. Return of fluid to the circulatory system b. Return of dissolved materials to the circulation c. Transport of fats to the circulatory system d. Defense of the body e. Transport of oxygen to the lungs 43. What 2 organs are considered to be part of the lymphatic system? a. The pancreas and the liver b. The gall bladder and the kidneys c. The spleen and the thymus d. The heart and the lungs e. The thalamus and the hypothalamus