The Immune System Nonspecific and Specific Defense
What is a pathogen?
Pathogen: ______________________________________________________________________________
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Harmful to living things
Examples of Pathogens include:
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How are Pathogens Spread?
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Soil
Water
Infected animals
o Food
o Animal Bites
Person-to-person contact
The Immune
System:________________________________________________________________
Two types of defense:
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Nonspecific Defense
1st line of Non-Specific Defense
Skin:___________________________________________________
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Any break in the _______________ allows entry.
Release sweat, oils, and waxes _____________________________________________
Mucous membranes:_________________________________________________________________
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Mucous:______________________________________________
Stomach: has acid that destroys potential ___________________ that are swallowed
Phagocytes: _______ that ingest pathogens.
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Macrophages: _____________ and destroy pathogens.
Moderate Fevers:___________________________________________________
Inflammation:______________________________________________________
Specific Defense: The Immune System
Organs of the Immune System:
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Bone marrow:
Thymus gland:
Lymph nodes:
Spleen:
The Immune System involves many types of White
Blood Cells
B Lymphocytes:
Antibodies:
T lymphocytes:
Specific Defense: Recognizing Pathogens
Immune Response: your ________ attack something
Antigen: anything that causes a _______________
Immune Response gets stronger over time
Primary Immune Response:
Secondary Immune Response: