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the main function of the immune system is to destroy anything what that enters the body

bacteria, viruses, pollen, dust

examples of foreign objects to enter the body are what? (4)

cancerous cells

the immune system is also vital is destroying what as they arise in the tissue?

deformed, defective

cancer cells are easily recognized by the immune system because they are what and what?


the cells of the immune system play an important role in the repair of what after it has been damaged?

white blood cells

the cells in the immune system are called what?


the white blood cells roam the tissues of the body searching for foreign invaders

plasma cells

these white blood cells produce proteins called antibodies


these attach themselves to bacteria and viruses and help kill them

chemicals, white

when macrophages encounter a bacteria or virus they release what that bring other what to the area?


the macrophages serve as somewhat of a what for the area?

mast cells

when a tissue is damaged these white blood cells release chemicals that cause the damaged tissue to become inflamed

swollen, red, hot

inflamed tissue causes it to become what, what, and what?


these are some of the most important white blood cells in the body

T-lymphocytes, B-lymphocytes

what are the two different types of lymphocytes?


these small organs contain immature lymphocytes

tissue, bacteria, viruses

as these cells become mature they leave the tonsil and travel throughout the neighboring what killed what 2 things?

thymus gland

this gland is found in the lower part of the throat

reproduce, mature, develop

it is where one of the most important lymphocytes called T-4 lymphocytes do what 3 things?

lymph nodes

these are dense masses of lymphocytes scattered all around the body

neck, armpit, groin, spine

where are lymph nodes most commonly known to be located? (4)

bacteria, viruses, cancer cells

as the lymph vessels carry the lymph fluid to these nodes, what 3 things that could be in this fluid are destroyed by the lymphocytes in the lymph nodes?

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