Immune System

1
ImmuneSystem

• Chapter 40

2

• Functions
• Defends against pathogens and disease
• Includes
• Skin mucus membranes
• White blood cells
• Lymph nodes and vessels

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Nonspecific Defenses

• First line of nonspecific defense
• Skin Mucus membranes
• Layers of epithelial tissue that produce mucus
• Line the digestive system, nasal passages, lungs,
  respiratory passages, and the reproductive tract
• Second line of nonspecific defenses
• Inflammatory response histamine (increase blood
  flow)
• Temperature response
• White blood Cells

4
Immune Response Specific Defenses

• Antibody defensive protein produced upon
  exposure to a specific antigen substance that
  illicits an immune response

5
Disorders of the Immune System

• Autoimmune disease the body launches an immune
  response against its own cells, attacking body
  cells as if they were pathogens.
• Multiple sclerosis (MS)
• Rheumatoid arthitis
• Lupus
• Type I diabetes