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The Immune System

Biology Project
by

elisa ferrer

on 14 January 2014

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Transcript of The Immune System

Vaccines safeguard the public from the d
The Immune System
How do vaccines and antibiotics impact the immune system?
How does the immune system impact human life?
What is the role of vaccines in safe guarding the public from the spread of infectious disease?
A vaccine is a weakened or killed form of a disease and is introduced to the immune system. Once the defensive cells recognize the intruding vaccine as a threat, the body can produce antibodies for it and eliminate it with its normal defense. However, if the host was to come in contact with the real disease, then it can be destroyed immediately by the immune system. This recognition of the disease is known as a specific immune response since the immune system is specifically prepared for these pathogens.
The immune system as a whole affects a human life greatly, realizing how important it truly is for every organism. The immune system destroys an immense amount of bacteria a day, killing and sanitizing your body so you can stay healthy and well.
The immune system serves as an important role in the human body; providing the essential protection from pathogens and potential disease. Generally, there are three lines of defense in the immune system. The first line of defense are the barriers (skin and mucous) second line is nonspecific immunity (inflammatory response, temperature response and proteins) and the third line of defense which is specific defenses.
In general , vaccines and antibiotics impact the immune system by "helping" destroy
pathogens
(an agent causing disease) that invade the host's body like
Vectors
which is a carrier that transfers an infective agent from one host to another, these are mostly mosquitoes that pass on diseases like malaria or dogs that pass fleas. Although, on the same note it's important to know that a vaccine and antibiotic are different and have different effects.
A
antibiotic
is a medicine full of chemicals that directly attack bacteria. Antibiotics dont affect regular cells so they are helpful when fighting off infection. These medicines are good to take when the immune system cant fight off infection due to fast reproduction of bacteria or toxins. Although, an antibiotic cant eliminate a virus since it isn't living.
Function of The Immune System
First line of defense: Barriers
Pathogens
try to enter and infest body, although the skin acts as a physical shield keeping sickness out. Also, mucous protects interior surfaces of the body.
When pathogens get past the skin and mucous and enters the cells it triggers
Inflammatory Response
which is a series of events that suppress infection an speed recovery.
Third Line of Defense: Specific Defenses
The immune system has cells and tissues that recognize and attack foreign substances in the body.
The white blood cells of these cells are called Lymphocytes; these cells must be able to recognize foreign invaders and tell them apart from the cells of the body. Antigens aid them by binding together in order to do a specific attack called immune response.
Immune Response is two part assault on a pathogen and these are: Cell mediated immune response and humoral response.
Second Line of Defense: Nonspecific Immunity
Skin
Pathogen
As you already know, vaccines introduce the disease to the immune system to "activate" its defenses, but towards the safety of the public, vaccinations are the key to avoid these
epidemics
or shared diseases. Mainly the role of vaccines in public health is to avoid any huge
pandemics
or major disease spread.
Another example would be
communicable disease
, which is disease spread from one person to another. A strong immune system would normally fight off these contagious bacteria, but a weak one can easily catch the cold. This is known as an
environmental factor.
An injury allows
pathogens to get
past the barrier
of the skin and
Histamine
is relea-
sed.
Phagocytes get
past the
capillary walls
and attack
pathogens.
phagocytes destroy
the pathogens and
the injury begins
to heal.
For example, Chronic Disease is often caused by defects or malfunctions in our immune system which is normally passed down through genetics. This includes Alzheimers, Breast cancer and heart disease.
These diseases is are also from
genetic factors.
A Prezi made by Carmelle, Elisa, Gwen and Nicholas.


Hope you enjoyed!
Sources: http://www.cdc.gov/vaccines/,http://www.ccfa.org/what-are-crohns-and-colitis/what-is-crohns-disease/,http://www.exploresupplements.com/areas-of-health/immune-health/vaccines-and-antibiotics
Vaccines safeguard the public from infectious
disease in how they heal the disease and eliminate it from spreading out in the public.
In the past, many diseases like polio,measles, and mumps were very infectious and killed an great amount of people but, with vaccines scientists were able to control them from harming any more people.
Cell Mediated responses when Interleukin-2 stimulates further
production of helper T cells and this increase allows them to
divide faster producing killer T-cells that recognize and destroy cells that have been infected by the
pathogen. Then Humoral immune response does the same thing but they stimulate B-cells that have receptors able to change antigen into plasma cells.These cells are highly specialized and able to create antibodies that activate specific antigens,they can also bind to pathogens and deactivate them or destroy them through nonspecific defenses.
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