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Disease Unit

To learn about infectious diseases and what causes them.

Kristen Coutoulakis

on 23 May 2012

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Transcript of Disease Unit

Words to know:
Disease Unit
A disease that is spread from one living thing to another or through the environment
A disease that is NOT spread from one living thing to another or through the environment
Non communicable
Immune system -
A network of cells, tissues, organs, and chemicals that fights pathogens.
Pathogen -
An organism that causes disease.
Physical barriers -
A white blood cell that attacks invading pathogens.
Virus -
A form of genetic material that invades living cells to reproduce
Lymphocytes -
Specialized white blood cells that provide the body with immunity.
Bacteria -
Single-celled microorganisms.
Antibody -
A protein that acts against a specific antigen.
Immunity -
The state of being protected against a particular disease.
Vaccine -
A preparation of dead or weakened pathogens that are introduced into the body to stimulate an immune response.
Frequency of Cancer
Antigen- is a substance capable of inducing a specific immune response
Bacterial- antiboiotics
(will kill or slow the growth of bacteria)
Viral- unlike
bacteria, viruses do not grow
as living cells. Symptoms are relieved,
and stopping the production of the virus is
the primary focus.
Fungual infections- Atheltes foot and yeast infections can be
treated with Over the counter Medicine and prescriptive drugs.
Protozoan Infections- maintain good hygiene and sanitation. Prescriptive Medication is the cure.
Parasitic Infections- roundworms and tapeworms
are not common in the U.S. Most common is head lice. Medicated shampoos are used for treatment.
Define the term disease.
Identify the term for "an agent that causes disease."
Define the term antibiotic resistance.
Identify the five types of pathogents that cause infectious disease.
True or False?
1. All infectious diseases are treated with the same medication?
2. Colds are caused by viruses?
3. Viruses reproduce inside human cells.
Protecting yourself from Infectious Diseases:
Describe how the body fights diseases.
Summarize five things a person can do to stay well
Describe how immunity to a disease develops.
State three things you should do when you are sick.
List three things you can do to prevent the spread of infectious diseases.
How your body fights Disease
Inflammatory Response- a reaction to injury or
infection that is characterized by pain,
redness and swelling.
This process of swelling or pus formation is
bringing WBC to the area to heal it.

Immune System- made up of cerain types of blood cells and certain proteins called antibodies. These cells also move through the lymphatic system. This system sweeps up bacteria or viruses and carries them to your lymph nodes.

WBC (white blood cells)- cells who primary job is to defend the body against disease
what you can do to stay well:
Protect yourself
Eat a healthy, balanced diet
Drink water
Reduce Stress
Exercise regulary
Get medical check-ups
Avoid sick people
Get vaccinated

How Are Infectious Diseases Treated?
Contaminated object
Vector- an organism
that carries and
transmits pathogens
Indirect Contact
Contaminated food and water-
improperly handled or stored harmful
bateria can develop
Direct Contact
Puncture Wound
contact with infected animal
Airborne Transmission
Physical Barriers- first line of defense is the skin. Your skin uses chemicals such as sweat and oil to kill pathogens that have settled on your skin.

Mucuous membrains- this lines the mouth, throat and nose and creates a barrier or a "trap" for pathogens.

Chemicals- already produced by your body (sweat, stomach acid, tears)
Full transcript