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MusclesWhat does the spleen do?
The spleen is an organ on the left side of the belly, behind the ribs. It works like a filter for the blood (just a comparison): it removes old cells and helps catch germs, as part of the body’s defenses.
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Questions people ask
Can you live without a spleen?
Yes. The liver and other organs take over part of its work. But the person becomes more prone to some infections, so they usually get extra vaccines and medical guidance.
Why do we get a side stitch when running?
This stitch is very common and goes away on its own. People used to blame the spleen, but today it is thought to come from irritation of the lining of the belly or a diaphragm cramp. Breathing deeply and slowing down usually helps. If the pain is strong or doesn’t go away, see a doctor.
Where is the spleen?
On the upper left side of the belly, behind the lower ribs and against the stomach.
Can the spleen rupture?
Yes, mainly after hard blows to the belly or left ribs, as in accidents. Because it receives a lot of blood, this is an emergency. Some infections, like mononucleosis, make the spleen bigger and more fragile, so a doctor may advise avoiding contact sports for a while.
Sources
This text was written using these references:
- Lymphatic System · National Cancer Institute (SEER Training)
This content has not been medically reviewed.