What cell type is primarily produced by the spleen?

• A. Platelets for clotting
• B. Red blood cells for oxygen transportation
• C. White blood cells for immune response
• D. Nerve cells for signaling

Answer: (C)

The spleen plays a crucial role in the immune system, primarily by producing white blood cells, which are essential for the body’s defense mechanisms. Among these cells, lymphocytes—particularly B cells and T cells—are generated in the spleen. B cells are responsible for producing antibodies, while T cells are involved in attacking infected cells and coordinating the immune response.

The spleen also has other functions, such as filtering blood and recycling iron from red blood cells, but its primary contribution in relation to the question is the production of white blood cells. These cells are key players in identifying and neutralizing pathogens, thus supporting the immune response and maintaining overall health.

Other options present functions primarily associated with different organs or systems: platelets are produced mainly in the bone marrow; red blood cells, which transport oxygen, are also produced in the bone marrow, and nerve cells are not produced by the spleen at all. Therefore, the emphasis on white blood cells accurately highlights the spleen's vital role in immunity.