Here's why:

* Lipase is an enzyme that breaks down fats (lipids).

* The spleen is primarily involved in filtering blood, storing white blood cells, and recycling old red blood cells. It doesn't play a significant role in digestion.

Here are some organs that do secrete lipases:

* Pancreas: The pancreas is the primary source of lipase in the body.

* Stomach: The stomach secretes gastric lipase, which begins the digestion of fats.

* Tongue: Lingual lipase is secreted by the tongue and helps break down fats in the mouth.

* Small intestine: The small intestine also produces some lipase.