1. SPONGE #3
Why might a person with a compromised immune system be unable to fight off a disease?

2. SPONGE #3
Why might a person with a compromised immune system be unable to fight off a disease?
Their immune system is not fighting off the pathogens. If the body cannot fight off pathogens they will get sick.

3. 31.1 Pathogens and Human Illness (10) 31.2 Immune System (10)
Table of Contents
31.1 Pathogens and Human Illness (10)
Summary (5)
31.2 Immune System (10)
31.3 Immune Response(10)
31.4 Immunity and Technology (10)
31.6 Diseases that Weaken the Immune System (10)
Sponges (10)
TOTAL= 85 pts

4. Bring ID cards!!!!!! CAHSEE No iPods, MP3s, or Laptops
Eat breakfast BEFORE 8 am
All 10th graders get free breakfast
Take homework to work on/books
Bring ID cards!!!!!!
2nd period - report to G-5
3rd period – report to C-6
5th period – report to C-4

5. KEY CONCEPT When the immune system is weakened, the body cannot fight off disease.

6. Leukemia is characterized by abnormal white blood cells.
Leukemia is cancer of the bone marrow.
characterized by immature white blood cells
They are immature so they cannot fight pathogens
causes weakened immune system

7. Leukemia leads to opportunistic infections.
occur because white blood cells cannot fight infections
if immune system were healthy, would fight these infections

8. Only cure- is a bone marrow transplant

9. HIV targets the immune system.
The human immunodeficiency virus (HIV) is a retrovirus (uses your body to duplicate its DNA)
attacks and weakens the immune system
is transmitted by mixing infected blood with a bodily fluid

10. HIV infection leads to AIDS.
T cell
dead T cell
antibody
activated B cell
HIV reproduces in and destroys T cells.
The body cannot replace T cells fast enough.
T cells cannot help in immune responses.

11. Ways to get HIV
Sexual intercourse (semen/vaginal fluid)
Mother to child (umbilical cord and/or breast milk)
Blood to blood contact (sharing needles/blood transfusion)

12. AIDS is acquired immune deficiency syndrome.
several opportunistic infections
Pneumonia
Viral infections
Cancers
tuberculosis
Immune system is worn out
very low amount of T cells
Medicine slows, but does not cure
ALWAYS results in death