1.a
2.d
3.c
4.b
5.a
6.c
7.b
8.a
9.b
10.d
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
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