The spleen is part of which body system?

The spleen is an integral part of the lymphatic system. This system plays a crucial role in the body's immune response and fluid balance. The spleen is responsible for filtering blood, removing old or damaged red blood cells, and helping to produce lymphocytes, which are vital for fighting infections. It also assists in storing blood and recycling iron.

While the spleen has some interactions with the circulatory system, as it filters blood, its primary function aligns closely with the lymphatic system. The lymphatic system is essential for the body's defense mechanisms and maintaining fluid levels, and the spleen’s contributions to these functions establish its classification within this system. Understanding the specific roles of body systems helps clarify the importance of organs like the spleen in maintaining overall health and immune function.