Barriers Flashcards
(6 cards)
1
Q
How do lungs act as barriers?
A
Your air passages have cells that make mucus. This traps dust and microbes. Cilia move the mucus up to your throat where it is swallowed.
2
Q
How do eyes act as barriers?
A
Tear glands make an antiseptic liquid containing the enzyme lysozyme that kills pathogens. Blinking spreads the liquid over the eye.
3
Q
Stomach
A
Acid made by the lining of you ur stomach kills pathogens in your food.
4
Q
Skin
A
Forms a barrier to pathogens
5
Q
Cuts
A
If you get cut your blood clots and forms a scab stopping pathogens from entering.
6
Q
Hair follicles
A
Glands in your skin make an antiseptic oil. It kills many pathogens and keeps the skin supple
