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True or False
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1

One of the functions of the lymphatic system is to defend the body against invading micro-organisms.
A)True
B)False
2

When substances pass though capillaries, it is always from the place of higher concentration to the place of lower concentration.
A)True
B)False
3

Lymph nodes contain cells called neutrophils.
A)True
B)False
4

Capillaries are the only type of blood vessel that allows substances to move in and out of the blood.
A)True
B)False
5

Macrophages are located everywhere in the lymphatic system.
A)True
B)False
6

Damaged heart valves often cause blood to flow backward.
A)True
B)False
7

Marcrophages destroy unwanted pathogens.
A)True
B)False
8

In order to be transported in the blood, lipids must combine with lipoproteins.
A)True
B)False
9

Lymph nodes contain cells called lymphocytes.
A)True
B)False
10

The hepatic portal system is made up of veins bringing blood to the liver.
A)True
B)False





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