INTRODUCTION TO IMMUNOLOGY (PART 1)

INTRODUCTION TO IMMUNOLOGY (PART 1)

1. 3 COMPONENTS OF IMMUNE SYSTEM

   • Cardiovascular System
     • Heart
     • Blood vessels
     • Basically moves blood throughout the body
   • Mononuclear Phagocyte System
     • Network of reticular fibres
     • Phagocytes (macrophages)
     • Cells engulf and destroy the microorganism and harmful substances
   • Lymphatic System
     • To transport lymph
     • Have lymphatic vessels
     • Lymph node

2. ORGANS OF LYMPHATIC SYSTEM

   • Primary lymphoid organ
     • Bone marrow
     • Thymus
   • Secondary lymphoid organ
     • Adenoid
     • Tonsils
     • Lymph nodes
     • Spleen
     • MALT
   • Lymph circulatory system
     • Lymphatic vessels

3. CELLS OF IMMUNE SYSTEM

   • Platelet

4. First Line Defense

   • Saliva - antibacterial enzymes
   • Skin - prevents entry
   • Stomach acid - low pH kills harmful microbes
   • Tears - antibacterial enzymes
   • mucus - traps dirt and microbes

5. SECOND LINE : PHYSIOLOGICAL BARRIER

   • Create hostile environment for the invaders
   • Fever, Inflammation, Phagocytosis, Antimicrobial proteins

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