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23 terms

Communicable Diseases

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Communicable Disease
A disease that is spread from one living thing to another or through the environment
Infection
A condition that occurs when pathogens in the body multiply and damage body cells
Virus
a piece of genetic material covered in a protein coat
Bacteria
single-celled microorganism that live almost everywhere on earth
Toxins
substances that kill cells or interfere with their functions
Vector
an organism that carries and transmits pathogens to humans or other animals
Respiratory Tract
passageway that makes breathing possible
Mucous Membrane
the lining of various body cavities including the nose, ears, and throat
Respiratory Infections
Common Cold, Flu, Pneumonia, Strep Throat, Tuberculosis
Pneumonia
an infection of the lungs in which the airs sacs fill with pus and other liquids
Jaundice
Yellowing of the skin and eyes
Cirrhosis
scarring of the liver
Immune System
a network of cells, tissues, organs, and chemicals that fights off pathogens
Inflammatory Response
a reaction to tissue damage caused by injury or infection
Phagocyte
white blood cells that attack invading pathogens
Antigens
substances that can trigger an immune response
Immunity
the state of being protected against a particular disease
Lymphocyte
specialized white blood cell that coordinates and performs many functions of specific immunity
Antibody
a protein that acts against a specific antigen
Vaccine
a preparation of dead or weakened pathogens that are introduced into the body to stimulate the immune response
Emerging Infections
communicable diseases whose occurrence in humans has increased within the past two decades or threatens to increase int he near future
Epidemic
a disease outbreak that affects many people in the same place and at the same time
Pandemic
a global outbreak of an infectious disease