Immune System

• Immune System


  A complex network that protects the body from pathogens and harmful substances.
• Innate Immunity

  The body's first line of defense, providing immediate, non-specific protection against pathogens.
• Adaptive Immunity

  A specific immune response that improves with each exposure to a pathogen and has memory.
• Lymphoid Organs

  Organs involved in the immune response, including the thymus, bone marrow, spleen, and lymph nodes.
• Antibodies

  Proteins produced by B cells that neutralize pathogens.
• T Cells


  A type of lymphocyte that plays a central role in cell-mediated immunity.
• B Cells

  A type of lymphocyte that produces antibodies and is involved in humoral immunity.
• Phagocytes


  Immune cells that engulf and digest pathogens, including neutrophils and macrophages.
• Immunological Memory


  The ability of the immune system to remember past infections for faster future responses.
• Complement System


  A group of proteins that enhance the ability to clear pathogens from the body.
• Cytokines


  Chemical messengers that coordinate immune responses.
• Natural Killer Cells


  A type of immune cell that can detect and destroy infected or abnormal cells.
• Autoimmune Disorder


  A condition where the immune system mistakenly attacks the body's own cells.
• Pathogen


  A disease-causing organism, such as bacteria, viruses, or fungi.
• Inflammatory Response


  The body's immediate reaction to injury or infection, characterized by redness, heat, swelling, and pain.
• Vaccination


  A method of stimulating the immune system to develop immunity against a specific pathogen.