Transcript Blood and Immunity Review

Immunity Review
Explain how wbc’s can protect
the body against disease.
Wbc’s produce antibodies and
memory cells when a pathogen
(antigen) enter the body.
Give an example of a process
that brings about active
immunity.
Person can come into contact with
the pathogen (get sick).
A person can get a vaccine.
What substances are formed
by the human body in
response to foreign proteins
entering the body?
Antibodies
An individual who has had
chicken pox rarely gets this
disease again. What type of
immunity is represented?
Active Immunity
Explain the contents of a
vaccine.
Dead or weak PATHOGEN
How does a measles vaccine
protect a child entering school
against the measles?
Vaccine is injected.
The body produces antibodies and
memory cells.
Antibodies attach to antigens on the
pathogen to help kill the pathogen.
Memory cells remain in your blood to
“remember” the pathogen.
Which type of immunity is when
your body makes the antibodies
after recovering from a disease or
getting a vaccination?
Passive Immunity
The immune system of humans may
respond to chemicals on the surface
of an invading organism.
What are these chemicals on the
surface called? Explain what will
happen once these chemicals enter
the body.
Antigens
The body will produce anibodies and
memory cells.
Which substances may form in
the human body due to
invaders entering the blood?
Anibodies and memory cells.
1. What is an allergy?
An oversensitivity to a HARMLESS
substance. Ex: pollen, dust, peanuts,
animal dander
2. What occurs when someone
experiences an allergic reaction?
The body produces chemicals called
HISTAMINES.
1. What pathogen causes AIDS?
HIV (which is a virus)
2. What is the effect of AIDS on the body?
It weakens the immune system so the
body cannot fight pathogens well.
Describe cancer.
Uncontrolled cell growth
A tumor may form.
Which statement best describes what happens
when someone receives a vaccination?
1. The ability to fight disease will increase due to
antibodies received from the pathogen.
2. The ability to fight disease caused by the
pathogen will increase due to antibody
production.
3. The ability to produce antibodies will decrease
after the vaccination.
4. The ability to resist most types of diseases will
increase.
Which part of the human blood
transports hormones and nutrients?
1. plasma
2. platelets
3. red blood cells
4. white blood cells
Which activity is not a function of white blood
cells in response to a pathogen?
1. engulfing these bacteria
2. producing antibodies to act against this type
of bacteria
3. preparing for future invasions of this type of
bacteria
4. speeding transmissions of nerve impulses to
detect these bacteria
The immune system of humans may respond to
chemicals on the surface of a pathogen by
1. releasing hormones that break down these
chemicals
2. synthesizing antibodies that mark these
organisms to be destroyed
3. secreting antibiotics that attach to these
organisms
4. altering a DNA sequence in these organisms
Vaccinations help prepare the body to
fight invasions of a specific pathogen
by
1. inhibiting antigen production
2. stimulating antibody production
3. inhibiting white blood cell production
4. stimulating red blood cell production
Which statement best describes an immune
response?
1. It always produces antibiotics.
2. It usually involves the recognition and
destruction of pathogens.
3. It stimulates asexual reproduction and
resistance in pathogens.
4. It releases red blood cells that destroy
parasites.
Which phrase does not describe a way the
human body responds to fight disease?
(1) destruction of infectious agents by white
blood cells
(2) production of antibodies by white blood
cells
(3) increased production of white blood cells
(4) production of pathogens by white blood
cells
A person with AIDS is likely to develop
infectious diseases because the virus
that causes AIDS
(1) destroys cancerous cells
(2) damages the immune system
(3) increases the rate of antibody
production
(4) increases the rate of microbe
destruction
In some individuals, the immune system
attacks substances that are usually
harmless, resulting in
1. an allergic reaction
2. a form of cancer
3. an insulin imbalance
4. a mutation