Skeletal System and Infection Defense: The Immune System's Role

The skeletal system provides structural support, movement, and mineral storage—not direct infection defense.

Infection protection is the immune system's domain:

• White blood cells (neutrophils, lymphocytes, macrophages)
• Antibodies and complement proteins
• Lymphatic system (nodes, vessels, spleen, thymus)
• Bone marrow (produces immune cells)
• Barrier defenses (skin, mucosa, microbiome)

Indirect skeletal contribution: Bone marrow hematopoiesis supplies immune cells; bone stores minerals for immune function. But active pathogen defense is immunological, not skeletal.