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Dear Yahoo!:
What is the purpose of the spleen? Can I live without one?
Mohamed
Dubai, United Arab Emirates
Dear Mohamed:
I'm your spleen. I'm a purplish-red organ shaped like a loose fist and located in the upper-left part of your abdominal cavity.

I have been called "the most ignored and misunderstood of all organs." In ancient times, people believed I was the seat of the emotions, but actually I am an integral part of your immune system.

My job description includes:

  • filtering out foreign organisms that infect your blood
  • removing your old or damaged platelets and red blood cells
  • storing extra blood and releasing it as needed
  • forming some types of white blood cells

If I become injured or diseased, I may have to be removed through a medical procedure called a splenectomy. About 1% of the population is spleenless. You can live without me (although important, I am not a vital organ), but your resistance to infection will be lowered, at least initially.

Although I like to think of myself as irreplaceable, eventually some of your other organs like the liver (a real team player), will take over my responsibilities.

 
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