White+Blood+Cells+-+KV

=Introduction= toc Have you ever played a videogame that you and your army battle enemies? You have a army to help fight the enemies. It’s a video game, all fun and games but the real fighting happens inside your body.

There, every moment your body’s own army defends against viruses, germs, pathogens. White blood cells (sometimes called wbc) can be thought of your army to defend against invaders, pathogens. WBC are part of an important system in the body, the immune system. =Function=

Like an army, white blood cells (leukocytes) find and kill their enemies, pathogens (pathogens are bacteria, virus or microorganism that can cause disease). These cells keep the body from getting sick. When pathogens get into the body, T cells finds/recognizes it and activates another T cell. This T cell eats the pathogen. B cells make proteins(antibodies) to fight the pathogens (T cells and B cells are white blood cells) according to (allen it all 138 139).There are fewer white blood cells than there are red blood cells. Like the name suggests, white blood cells are in blood. =Structure=

White blood cells are like security guards, protecting the body from invaders. Some White blood cells eat pathogens. They are bigger than red blood cells because they need to be bigger than the pathogen to consume it. Another reason they are bigger is because there are less white blood cells than other cells in the blood, bigger, bigger radius to catch germs.According to BrainPOP ¨Blood¨ video, there are about 10,000 wbc in a drop of blood, compared to how many red blood cells are in a single drop, 50 million. Like red blood cells, white blood cells are made in the bone marrow. B cells also can make proteins (antibodies) so wbc that eat pathogens recognize which cell to eat. =HIV=

White blood cells are important because they kill pathogens. WBC are hard to kill but, there are some viruses that can seriously harm wbc, one is HIV. HIV stands for human immunodeficiency virus. It can be spread by body fluids, like blood. The virus is the only virus known to attack wbc directly and kill it. When the virus enters the body, it attacks a wbc. It enters the wbc and reproduces in it. The wbc will eventually die, by then many other cells are infected. HIV makes the body more likely to get sick because it infects and kills most of the wbc. That means there are less wbc to fight infection and the immune system gets weaker. HIV eventually can progress into AIDS which is incurable.

=Conclusion=

White blood cells are important because they kill pathogens. WBC are hard to kill but, there are some viruses that can seriously harm wbc, one is HIV. HIV stands for human immunodeficiency virus. It can be spread by body fluids, like blood. The virus is the only virus known to attack wbc directly and kill it. When the virus enters the body, it attacks a wbc. It enters the wbc and reproduces in it. The wbc will eventually die, by then many other cells are infected. HIV makes the body more likely to get sick because it infects and kills most of the wbc. That means there are less wbc to fight infection and the immune system gets weaker. HIV eventually can progress into AIDS which is incurable.

=References= Allen, Katy Z., et al. Human Body Systems and Health. Orlando, Holt, Rinehart,  and Winston, 2005. "Blood." BrainPOP, www.brainpop.com/health/bodysystems/blood/. Accessed 30 Jan.  2017. "Immune System." BrainPOP, www.brainpop.com/health/bodysystems/immunesystem/. Nyland, Jennifer. "White Blood Cell." World Book Student. World Book, 2017. Web.  30 Jan. 2017. Padilla, Michael J., et al. Prentice Hall Science Explorer. Boston, Pearson  Prentice Hall, 2007. "Magnets and the Body." Peripheral Neuropathy Treatments ,  www.peripheralneuropathytreatments.com/magnets.htm. Accessed 2 Feb. 2017.