Which body systems store immune cells that help fight infections?

• A. Circulatory and Lymphatic
• B. Immune and Lymphatic
• C. Digestive and Endocrine
• D. Skeletal and Endocrine

Answer: (B)

The immune system is specifically designed to identify and eliminate pathogens, such as bacteria and viruses. Immune cells, including lymphocytes (T cells and B cells), play a crucial role in this defense mechanism. The lymphatic system is intricately involved in the functioning of the immune response. It is responsible for transporting these immune cells throughout the body, as well as housing lymph nodes, where immune cells can proliferate and respond to infections.

The lymphatic system aids in the production and maturation of various immune cells, ensuring they are ready to mobilize when an infection occurs. Additionally, other components of the immune system, such as the bone marrow (where immune cells are produced) and the thymus (where T cells mature), also contribute to the overall immune function. However, in the context of the question, the inclusion of the lymphatic system specifically highlights its role as a storage and transport mechanism for immune cells.

In contrast, options that include the digestive or endocrine systems do not resonate with the storage or production of immune cells directly. The skeletal system, while it does play a role in providing a structure for the body and can influence the immune response indirectly, is not primarily responsible for storing immune cells. Thus, the correct answer reflects the critical functions