UNIT 7 Nursing management of patients with Immunological problems 🌐 IMMUNE SYSTEM: 🧬 🔹Definition: The immune system is a complex network of cells, tissues, organs, and molecules that defends the body against pathogens (bacteria, viruses, fungi, parasites) and abnormal cells. 🧱 🔹Components of Immune System: 🔸 1. Organs (Lymphoid Organs): 🧠 Central Lymphoid Organs 🦴 Bone Marrow – produces all blood cells including lymphocytes 🧠 Thymus – site of T-cell