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What is an example of a first line defensive mechanism?
External barriers
What are some examples of second line defense mechanisms?
- Phagocytic cells
- Antimicrobial proteins
- Immune resistance
- Inflammation
- Fever
What is an example of third line defense mechanisms?
- Specific Immunity
What is an example of mechanical protection?
- Kertanized cells of epidermis
- Regular shedding of outer layers
What is an example of chemical protection?
- Sebum from sebaceous glands
- Acid Mantle - pH (3-5)
- Defensins
- Lactic acids
What do mucous membranes do?
External barriers which line body cavities open to outside. The mucous traps microbes and foreign substances.
Where are mucous membranes found?
- Repiratory
- Digestive
- Reproductive
- Urinary
What 3 fluids contain lysozyme?
1. Tears
2. Salivia
3. Mucous
What is lysozyme?
A bacterial destroying enzyme.
Acidic stomach destroys many pathogens that may get digested.
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