Question

Which secondary lymphoid organ is responsible for filtering blood, storing lymphocytes, and destroying aged blood cells?

Options

• Lymph nodes

• Thymus

• Spleen

• Bone marrow

Answer 1

The spleen is a secondary lymphoid organ located in the left upper abdomen. Its main functions include filtering blood, storing lymphocytes, and removing aged red blood cells. It also plays an important role in generating immune responses against blood-borne pathogens.