Download hiv - Mrs. Salmon Science

HOM Lesson 4-Unit3
Objective:
Aim:
Assessment:
Do Now:
Mini-Lesson:
Guided Practice:
Closing/Wrap
Up:
Homeostasis and Immunity
Immune System
 AIDS and Immune Disorders
What is AIDS?
How is AIDS spread?
Prevention and treatment of AIDS.
Immune disorders.
Warm Up based on yesterday’s lesson, Note taking during mini-lesson,
questions during individual work, disease questions part 1 from yesterday,
disease questions part 2, and verbal assessment: What is a vaccine? Does
the immune system have a memory? What are allergies?
What do you know?
 Notes and Graphic Organizer
Vocabulary: antibody, antigen, lymph, nodes, immune, lymphatic,
autoimmune, vaccine, vaccination
Materials: handouts
Demonstration of passing on a sexually transmitted disease?
Phenothalein and ammonia (pink)
HW: Regents Questions
HOM Lesson 4-Unit3
Name _______________________________________
Do Now:
Do these behaviors lead to HIV transmission?
Date _____
HOM Lesson 4-Unit3
AIDS and Immune System Disorders
a. What is AIDS?
a)
AIDS = Acquired Immune Deficiency Syndrome
HOM Lesson 4-Unit3
b)
Caused by HIV = Human Immunodeficiency Virus
1. HIV enters body and attacks T-cells
2. Killing helper T-cells weakens immune system and after T-cell
number drops significantly patient is diagnosed with AIDS
3. HIV-infected person develops “opportunistic infections”
a. Infection that takes advantage of persons weakened immune
system
b. How is AIDS spread?
a)
Body fluid exchange
1. Sexual intercourse, Needle sharing, Breast Feeding, Blood
transfusions (not a serious problem in U.S. anymore)
c. Prevention and Treatment of AIDS
a)
There is presently NO cure
b)
Avoid exchange of bodily fluids to prevent transmission
d. Immune Disorders
1. Allergies (see notes from yesterday)
b)
Autoimmune Disease
1. Person’s immune system fails to recognize some of own body cell’s
as self and produces antibodies against them
2. “Juvenile Diabetes”  antibodies attack insulin producing pancreas
3. MS (Multiple Sclerosis)  antibodies attack fat covering of nerve
cells
4. Lupus erythematosus (Lupus)  antibodies are formed to different
parts of body, like the kidneys
5. Cancer
a. Cells multiply without control (metastasis)
b. Immune system normally kills cancer cells by action of T-cells
c. If T-cells malfunctioning, cancer cells go unchecked and will
spread (proliferate) and do damage
IN YOUR OWN WORDS:
What is HIV? What is AIDS?
How do you
contract HIV?
What does AIDS
do to the
immune system?
Name __________________________________________
What is an autoimmune
disorder? Provide an
Example.
Date ____
HOM Lesson 4-Unit3
HIV/AIDS Homework
1. People with AIDS are unable to fight multiple infections because the virus
that causes AIDS
(1) weakens their immune systems
(2) produces antibodies in their blood
(3) attacks muscle tissue
(4) kills pathogens
2. When HIV, which causes AIDS, invades the body of a person, that person often develops
diseases. These diseases are caused by organisms that usually do not harm people who are not
infected with HIV Explain why the organisms are more harmful to people with HIV than to people
without HIV
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
3-4.
HOM Lesson 4-Unit3
5.
6. Many viruses infect only a certain type of cell because they bind to certain:
a)
b)
c)
d)
Other viruses on the surface of cells
Mitochondria in the cell
Hormones in the cell
Receptor sites in the cell
7. In 1995, during an Ebola virus outbreak, approximately 80% of the infected individuals died.
Which statement is an inference that could be made based on this information?
a)
The individuals who survived were able to produce antibodies against the
Ebola virus
HOM Lesson 4-Unit3
b)
c)
d)
the individuals who survived were not exposed to the ebola antigens
eighty percent of the population had a natural immunity to Ebola virus
Eighty percent of the population was infected with a viral antigen.