Transcript TOPIC: Immunity AIM: What is immunity?

TOPIC: Immunity
AIM: What is
immunity?
Topic: Immunity
Aim: How does the immune
system fight disease?
Do Now: How do antibodies help
to protect the body?
AIDS
• Acquired Immune
Deficiency
Syndrome
• Infectious
disease
• Caused by HIV (Human
immunodeficiency virus)
Damages immune system by
destroying T cells
(body can’t fight off pathogens)
How is
HIV
transmitted?
1. Contact with
infected blood
2. Sharing
intravenous
needles
3. Sexual contact
4. Motherfetus
Allergies • An immune response or
reaction to substances
you are allergic
(sensitive) to
• Allergen = what you are
allergic to
• (pollen, dust, etc)
• Histamines produced
(chemicals released by cells that
cause symptoms)
Topic: Immunity
Aim: How does the immune
system fight disease?
Do Now:
1. Explain 2 differences
between an infectious and
noninfectious disease.
2. Give an example of each.
•How many of you have had the Chicken Pox?
•Why is it called the chicken pox?
•The term "chicken pox"
comes from the Old English
term "gican pox," which
referred to an itching pox,
not because people believed
the illness was caused by
chickens.
•The specks that appear looked as
though the skin was pecked by chickens.
•The disease was named after chick peas, from a supposed
similarity in size of the seed to the rash.
•
Immunity• Ability to resist
infection
2 types of Immunity
1. Active
Immunity
•Produce your
own antibodies
•(permanent)
•You receive active
immunity by:
• a. Contact with pathogen
• b. Receiving vaccination =
• Injection of weak/dead
pathogen
• How does a vaccine work?
• A. Vaccine injected
•B. WBC’s detect
antigen & multiply
•C. Antibodies &
memory cells made
• D. Antibodies help fight
pathogen
• E. Memory cells remain
• (Pathogen enters  memory
cells quickly make antibodies)
2. Passive • Temporary immunity
Immunity • Receive antibodies
from another
•Example = mother to
child in womb & during
breastfeeding
Review:
1. Explain one difference between active
and passive immunity?
2. How does a person acquire active
immunity to a specific disease?
3. What is a vaccine?
4. Give an example of someone acquiring
passive immunity.
Video Review:
1. What does immunity mean?
2. Identify 2 ways you can become immune to
some diseases?
3. What is a vaccine made of?
4. How does the body react to a vaccine?
5. What organ system does the polio virus
affect?
6. How does the polio virus affect the body?
7. When did Jonas Salk create the polio vaccine?
8. What are some of the diseases we have
vaccines for today?
TOPIC: Transport & Immunity
AIM: Review
DO NOW:
1. Which side of your heart pumps oxygenated
blood?
2. To where will this blood be sent to?
3. Which blood vessel carries deoxygenated blood
back to the right side of the heart?
4. What is the job of your white blood cells?
5. What part of the heart receives blood?
6. What is the function of a valve?
7. What kind of blood does the aorta carry?
8. Where does the aorta send blood to?
DO NOW:
9. Label the heart below.
A. aorta
Upper vena
cava J.
B.Left atrium
C.valve
Right
atrium I.
valve
H.
Right
ventricle
G.
F.
Lower vena cava
D. Left
ventricle
E. septum
10. What physical barriers make up the
body’s first line of defense?
11. Explain the difference between an
inflammatory response and interferons.
12. Explain the difference between the 2
types of white blood cells?
13. There are 2 types of lymphocytes.
Identify each one and explain their
function.
14. Explain the differences between active
and passive immunity.