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Fist-sized abdominal organ monitors blood quality and mounts immune responses. The figure is taken from MedlinePlus, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

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The spleen recycles old red blood cells and stores platelets

Fist-sized abdominal organ monitors blood quality and mounts immune responses

Located in the upper left abdomen, the spleen acts as a blood filter. Its red pulp breaks down old or damaged red blood cells to salvage iron, while its white pulp synthesises antibodies and stores emergency reserves of platelets and white blood cells.

Where this comes from

MedlinePlus

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White blood cells defend the body against infectious pathogensLeukocytes circulate in blood and tissue to destroy invading bacteria and viruses The thymus gland trains T-cells during early childhoodChest organ shrinks after puberty after establishing immune cell repertoire Lymph nodes filter interstitial fluid to combat infectionsHundreds of bean-sized nodes trap viruses and bacteria throughout the body Human kidneys filter roughly one hundred eighty litres of blood dailyPaired abdominal organs cleanse blood plasma and regulate fluid balance Human blood vessels could circle the Earth two and a half timesStretching capilliaries arteries and veins end to end totals 100,000 kilometres The body produces millions of red blood cells every secondRed blood cells circulate for about 120 days before being recycled

Tags: spleen, blood, immunity

The spleen recycles old red blood cells and stores platelets: the short answers

Where does this come from, and can I check it?: Fist-sized abdominal organ monitors blood quality and mounts immune responses. The figure is taken from MedlinePlus, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a human body fact?: Yes. It sits on the Human Body shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.