Which organ is primarily responsible for filtering blood and does not participate in digestion?

• A. Liver
• B. Spleen
• C. Stomach
• D. Pancreas

Answer: (B)

Understanding how organs handle blood versus digestion helps here. The spleen is the organ that filters blood—removing old or damaged red blood cells and helping mount immune responses—without producing digestive fluids or participating in the digestion process. The liver also filters blood, but it also plays a key role in digestion by producing bile that aids fat digestion, so it isn’t the right pick for a purely non-digestive blood filter. The stomach is a primary digestive organ, breaking down food, so it’s not the correct choice. The pancreas releases digestive enzymes into the small intestine, which is another clear digestive function. Therefore, the organ that fits the description best is the spleen.