Facts About the Spleen

By Rebekah Richards
The spleen helps fight off infection.

The spleen is an organ in the lymphatic system. The lymphatic system maintains the body’s fluid balance and helps fight against infection.

Location

The spleen, which is about the size of a fist, is located on the left side of the body, under the ribs and above the stomach.

Function

The spleen helps store and release white blood cells, which can regulate inflammation and help heal injured tissue. It also filters blood and helps break down old red blood cells, so they can be recycled into new cells.

Diseases

Diseases involving the spleen include sickle cell anemia, which causes abnormally shaped red blood cells, and malaria. Injuries can also damage or rupture the spleen, especially if it is swollen.

Importance

Although it is possible to survive without a spleen, people without spleens require extra vaccinations and are more likely to contract bacterial infections.

Fun Fact

If part of the spleen is removed, the spleen can sometimes regenerate.

About the Author

Rebekah Richards is a professional writer with work published in the "Atlanta Journal-Constitution," "Brandeis University Law Journal" and online at tolerance.org. She graduated magna cum laude from Brandeis University with bachelor's degrees in creative writing, English/American literature and international studies. Richards earned a master's degree at Carnegie Mellon University.