5. Which one of the following is not a cause of anemia?
a diet lacking in iron and certain vitamins
germs from someone with anemia
inherited problems relating to red blood cells.
loss of a large amount of blood
6. Which of the following carries blood to every part of the body? (1 point)
blood vessels
the heart
lymph nodes
the ventricles
7. Nutrients and oxygen diffuse into body cells from ______. (1 point)
arteries
the aorta
capillaries
veins
8. The leading cause of death in humans is _____, which involves the ______. (1 point)
automobile accidents;
entire body
cancer;
lymphatic system
heart disease;
circulatory system diabetes;
immune system
9. The lymphatic system can best be compared to ______ because it ______. (1 point)
a series of caves; stores fluid until it has to be moved drain;
moves fluid throughout your body
net;
catches foreign invaders
water balloon;
contracts and expands
10. Which substance is not reabsorbed by blood after it passes through the kidneys? (1 point)
salts
sugars
water
waste
1.a
2.d
3.c
4.b
5.a
6.c
7.b
8.a
9.b
10.d
DO NOT LISTEN TO SmartyPants ALL OF MY ANSWERS WERE WRONG! JUST TRUST ME ON THIS...
5. The correct answer is "germs from someone with anemia." To determine this, let's analyze the options provided.
a. A diet lacking in iron and certain vitamins: This is a known cause of anemia. When the body doesn't receive enough iron and vitamins, it cannot produce enough healthy red blood cells, leading to anemia.
b. Germs from someone with anemia: This option is not a cause of anemia. Anemia is primarily caused by a lack of healthy red blood cells or hemoglobin, not by germs.
c. Inherited problems relating to red blood cells: This is another known cause of anemia. Certain inherited conditions can affect the production, structure, or lifespan of red blood cells, leading to anemia.
d. Loss of a large amount of blood: This is also a cause of anemia. When a person loses a significant amount of blood, such as through bleeding or trauma, it can result in a decrease in red blood cells, leading to anemia.
Therefore, the correct answer is "germs from someone with anemia."
6. The correct answer is "blood vessels." To determine this, let's analyze the options provided.
a. Blood vessels: This is the correct answer. Blood vessels, including arteries, veins, and capillaries, carry blood to every part of the body. Arteries carry oxygenated blood away from the heart, veins carry deoxygenated blood back to the heart, and capillaries facilitate the exchange of nutrients and gases in tissues.
b. The heart: While the heart plays a crucial role in pumping blood, it is not responsible for carrying blood to every part of the body. That function is performed by blood vessels.
c. Lymph nodes: Lymph nodes are part of the lymphatic system and play a role in filtering lymph fluid, not carrying blood.
d. The ventricles: The ventricles are chambers of the heart that pump blood, but they do not carry blood throughout the body. Blood vessels are responsible for this task.
Therefore, the correct answer is "blood vessels."
7. The correct answer is "capillaries." To determine this, let's analyze the options provided.
a. Arteries: Arteries carry oxygenated blood away from the heart to the body's tissues and organs. They do not facilitate the diffusion of nutrients and oxygen into body cells.
b. The aorta: The aorta is the largest artery in the body, carrying oxygenated blood from the heart to the rest of the body. It is not directly involved in the diffusion of nutrients and oxygen into body cells.
c. Capillaries: This is the correct answer. Capillaries are the smallest blood vessels and are where the exchange of nutrients, oxygen, and waste products occurs between the bloodstream and body cells.
d. Veins: Veins carry deoxygenated blood back to the heart. They do not directly facilitate the diffusion of nutrients and oxygen into body cells.
Therefore, the correct answer is "capillaries."
8. The correct answer is "heart disease; circulatory system." To determine this, let's analyze the options provided.
a. Automobile accidents; entire body: While automobile accidents can cause death, they are not the leading cause of death in humans.
b. Cancer; lymphatic system: Cancer is a significant cause of death, but it affects various organs and systems in the body, not specifically the lymphatic system.
c. Heart disease; circulatory system: This is the correct answer. According to statistics, heart disease is the leading cause of death in humans. It affects the circulatory system, specifically the heart and blood vessels.
d. Diabetes; immune system: Diabetes is a chronic condition that affects the body's ability to regulate blood sugar levels. While it can have an impact on the immune system, it is not the leading cause of death in humans.
Therefore, the correct answer is "heart disease; circulatory system."
9. The correct answer is "a series of caves; stores fluid until it has to be moved drain; moves fluid throughout your body." To determine this, let's analyze the options provided.
a. A series of caves; stores fluid until it has to be moved: The lymphatic system can be compared to a series of caves in terms of its structure, as it consists of various lymphatic vessels, nodes, and organs. However, the purpose of the lymphatic system is not solely to store fluid until it needs to be moved.
b. Drain; moves fluid throughout your body: This is the correct answer. The lymphatic system functions as a drainage system, collecting excess fluid from tissues and returning it to the bloodstream. It also plays a vital role in immune function as it filters out pathogens and foreign invaders.
c. Net; catches foreign invaders: While the lymphatic system does play a role in catching foreign invaders, this comparison does not accurately capture its overall function.
d. Water balloon; contracts and expands: Although a water balloon can contract and expand, this comparison does not adequately represent the function and purpose of the lymphatic system.
Therefore, the correct answer is "drain; moves fluid throughout your body."
10. The correct answer is "waste." To determine this, let's analyze the options provided.
a. Salts: After passing through the kidneys, salts are reabsorbed by the blood.
b. Sugars: After passing through the kidneys, sugars are reabsorbed by the blood.
c. Water: After passing through the kidneys, water is reabsorbed by the blood. The kidneys regulate the amount of water reabsorbed to maintain proper hydration.
d. Waste: This is the correct answer. After passing through the kidneys, waste products such as urea and toxins are not reabsorbed by the blood but rather excreted in the urine.
Therefore, the correct answer is "waste."