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Topic : Immunity Aim : Explain some disorders of the immune system.

Topic : Immunity Aim : Explain some disorders of the immune system. Do Now : http://www.brainpop.com/health/diseasesinjuriesandconditions/fluandfluvaccine/ HW : Castle Learning – Midterm due Friday at 8:00a.m. Allergies. Noninfectious A reaction to HARMLESS substances (allergens)

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Topic : Immunity Aim : Explain some disorders of the immune system.

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  1. Topic: Immunity Aim: Explain some disorders of the immune system. Do Now: http://www.brainpop.com/health/diseasesinjuriesandconditions/fluandfluvaccine/ HW: Castle Learning – Midterm due Friday at 8:00a.m.

  2. Allergies • Noninfectious • A reaction to HARMLESS substances (allergens) • Produces HISTAMINES which cause symptoms

  3. AIDS • Infectious • Acquired Immune Deficiency Syndrome

  4. Caused by HIV (Human immunodeficiency virus) • Breaks down the immune system so that the body can’t fight off pathogens

  5. Transmitted by: Contact with infected blood Sharing infected intravenous needles Sexual contact with an infected person

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

  7. Review: • Explain allergies. • Explain why a person with AIDS dies from another infection. • Explain cancer.

  8. Infectious diseases are caused by • deficiencies in the diet • Allergies • microscopic organisms that can be transmitted from one organism to another • malfunctioning organs

  9. A person with AIDS is likely to develop infectious diseases because the virus that causes AIDS • destroys cancerous cells • damages the immune system • increases the rate of antibody production • increases the rate of microbe destruction

  10. In some individuals, the immune system attacks substances that are usually harmless, resulting in • an allergic reaction • a form of cancer • an insulin imbalance • a mutation

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