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)
the immune system is also vital is destroying what as they arise in the tissue?
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
these white blood cells produce proteins called antibodies
these attach themselves to bacteria and viruses and help kill them
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?
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
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?
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?
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?