Download Disorders

Topic: Immunity
Aim: Explain some disorders of the immune
system.
Do Now:
http://www.brainpop.com/health/disease
sinjuriesandconditions/fluandfluvaccine/
HW: Castle Learning – Midterm due Friday
at 8:00a.m.
Allergies
• Noninfectious
• A reaction to
HARMLESS
substances
(allergens)
• Produces
HISTAMINES
which cause
symptoms
AIDS
•Infectious
•Acquired Immune
Deficiency Syndrome
• Caused by HIV (Human
immunodeficiency virus)
• Breaks down the immune system so
that the body can’t fight off
pathogens
• Transmitted by:
–Contact with infected blood
–Sharing infected
intravenous needles
–Sexual contact with an
infected person
Cancer
• Noninfectious
• Abnormal
cells grow &
divide
uncontrollably
• May form
tumors
Review:
1. Explain allergies.
2. Explain why a person with AIDS dies
from another infection.
3. Explain cancer.
Infectious diseases are caused by
a. deficiencies in the diet
b. Allergies
c. microscopic organisms that can be
transmitted from one organism to another
d. malfunctioning organs
A person with AIDS is likely to develop
infectious diseases because the virus
that causes AIDS
a. destroys cancerous cells
b. damages the immune system
c. increases the rate of antibody
production
d. increases the rate of microbe
destruction
In some individuals, the immune system
attacks substances that are usually
harmless, resulting in
a. an allergic reaction
b. a form of cancer
c. an insulin imbalance
d. a mutation