Final answer:
The white pulp of the spleen surrounds the central arteries and is involved in the immune response, being rich in lymphocytes.
Step-by-step explanation:
The white pulp of the spleen forms cuffs around the central arteries. The spleen contains two types of tissue: red pulp and white pulp. The red pulp is responsible for filtering the blood and removing damaged red blood cells, while the white pulp is rich in lymphocytes that remove antigen-coated bacteria from the blood and surrounds a central arteriole in the spleen. It consists of germinal centers of dividing B cells surrounded by T cells and accessory cells, including macrophages and dendritic cells.