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40-3 Immune System Disorders

40-3 Immune System Disorders. Page1043. A. Allergies. 1. Allergies are an overreaction of the immune system to antigens. A. Allergies. 2. Mast Cells respond to antigens by releasing histamine. A. Allergies.

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40-3 Immune System Disorders

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  1. 40-3 Immune System Disorders Page1043

  2. A. Allergies • 1. Allergies are an overreaction of the immune system to antigens.

  3. A. Allergies • 2. Mast Cells respond to antigens by releasing histamine.

  4. A. Allergies • 3. Histamines increase blood flow to that area and mucus production in the respiratory system which causes sneezing, watery eyes, and runny nose.

  5. A. Allergies • 4. Antihistamines are drugs taken to decrease histamines.

  6. B. Asthma • 1. Asthma is chronic respiratory disease that causes air passages to narrow (makes it difficult to breathe).

  7. B. Asthma • 2. Asthma attacks can be triggered by infections, exercise, emotional distress, etc.

  8. C. Autoimmune Diseases • 1. When the immune system makes a mistake and attacks the body's own cells, it produces an autoimmune disease.

  9. C. Autoimmune Diseases • 2. Examples include: Type I Diabetes, Rheumatoid Arthritis, and Multiple Sclerosis (MS).

  10. D.AIDS (Immunodeficiency Disease) • 1. Acquired Immunodeficiency Syndrome (AIDS) destroys helper T cells.

  11. D.AIDS (Immunodeficiency Disease) • 2. The human immunodeficiency virus (HIV) carries its genetic information in RNA.

  12. D.AIDS (Immunodeficiency Disease) • 3. HIV enters a cell and inserts its genetic information so that the cell now produces viral RNA and proteins.

  13. D.AIDS (Immunodeficiency Disease) • 4. The fewer helper T cells, the more advanced the disease.

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