Transcript TOPIC: Immunity AIM: What is immunity?

Topic: Immunity
Aim: Explain the two different types of
immunity.
Do Now: Describe the difference between
the two types of bone marrow.
HW: Asexual Repro and Mitosis Reading
Notes
Review:
1. Identify what is found on the surface of
pathogens.
2. Identify the protein that is produced when
foreign antigens enter the body.
3. What are antibodies specific?
4. Identify the type of white blood cells that
produce antibodies.
5. Explain what happens when a pathogen enters
the body.
Which statement does not identify a characteristic
of antibodies?
1. They are produced by the body in response to
the presence of foreign substances.
2. They may be produced in response to an
antigen.
3. They are nonspecific, acting against any
foreign substance in the body.
4. They may be produced by white blood cells.
Part of the body’s first line of
defense against disease-causing
organisms is
a. the immune system
b. the skin
c. antibodies
d. interferon
A
Pathogen
B
Antigen
C
Antibody
Immunity
• Resistance to a
disease
14. Describe •
the function •
of memory
cells.
Another type of
lymphocyte
Remain in the blood ready
the defend against invasion
of the same pathogen at
another time
2 types of Immunity
• Long-term
Active
(permanent)
Immunity
• Acquired by:
1. Coming into contact
with pathogen
–
Antibodies and memory
cells produced
– Antibodies bind to
antigens
– Memory cells remain in
your blood to
“remember” the
pathogen
(IMMUNE RESPONSE)
The graph represents the number of antibodies
produced by memory cells.
Based on the graph, explain how memory cells
prevent you from getting the disease again.
2. Vaccination = injection of weak or dead
pathogen
(an immune response occurs)
• Temporary
• Acquired by RECEIVING
Passive
Immunity antibodies
1. Child receives antibodies in
womb & during
breastfeeding
2. Receiving antibodies orally or by
injection
Let’s summarize…
1. Explain the difference between passive and
active immunity.
2. Explain how someone can receive active
immunity for a disease.
3. Explain the contents of a vaccine.
4. Explain how a person can receive passive
immunity for a disease.
5. Why is passive immunity only temporary.
http://www.brainpop.com/health/bodysys
tems/immunesystem/
http://www.brainpop.com/health/diseases
injuriesandconditions/vaccines/
http://www.brainpop.com/health/diseases
injuriesandconditions/fluandfluvaccine/
B
C
A
Identify each labeled structure and support
your answer.
Resistance to a specific disease
is a(n)
a. antibiotic.
b. immunity.
c. white blood cells.
d. addiction
Once you have had the chicken pox, it is
unlikely that you will ever get the
disease again because your body has
developed a(n)
a. passive immunity.
b. addiction.
c. active immunity.
d. antibiotic.
Immunity that occurs when
a body makes its own
antibodies is called
_________immunity.
a. Passive
b. Temporary
c. Shortened
d. Active
An injection of a weakened
virus that allows one to
develop immunity against a
disease is called a
a. antibody
b. vaccine
c. epidemic
d. pathogen
Which of the following
parts of the body's
defense system seeks
out and destroys
bacteria?
a. mucus
b. white blood cells
c. skin
d. red blood cells