TOPIC: Immunity AIM: What are some disorders of the immune system?

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Presentation transcript:

TOPIC: Immunity AIM: What are some disorders of the immune system?

1. Allergies Noninfectious An immune response or reaction to substances you are allergic (sensitive) to

Allergen = what you are allergic to (pollen, dust, etc)

Histamines produced (chemicals released by cells that cause symptoms)

2. AIDS Acquired Immune Deficiency Syndrome (Infectious)

Caused by HIV (Human immunodeficiency virus)

Damages immune system by destroying T cells (body can’t fight off pathogens)

How is HIV transmitted? 1. Contact with infected blood 2. Sharing intravenous needles 3. Sexual contact

3. Cancer Noninfectious Abnormal cells grow & divide uncontrollably May form tumors

4. AUTOIMMUNE DISEASES Noninfectious Immune system attacks body's own cells

Example: Multiple Sclerosis Immune system damages nerve cell covering

Rheumatoid Arthritis Rheumatoid Arthritis 3D Animation