1. Topic: Immunity
Aim: Explain some disorders of the immune system.
Do Now:
HW: Castle Learning – Midterm due Friday at 8:00a.m.

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

6. AIDS
Infectious
Acquired Immune Deficiency Syndrome

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

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

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

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

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

14. 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

15. 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