Answer:
Physical and Chemical Barriers (Innate Immunity) Physical and chemical barriers form the first line of defense when the body is invaded. Physical Barriers. The skin has thick layer of dead cells in the epidermis which provides a physical barrier. Periodic shedding of the epidermis removes microbes.
Explanation
Physical and chemical barriers form the first line of defense when the body is invaded. The skin has thick layer of dead cells in the epidermis which provides a physical barrier. Periodic shedding of the epidermis removes microbes. The mucous membranes produce mucus that trap microbes.
Rural areas are unlikely to have fire hydrants for a water source
Answer:
Explanation:
I think it's true.
A patient should always be aware of what he/she puts in their mouth and swallows. You don't really know, unless you study what the "medicine" does. And you should. You can trust your doctor to know what he/she is doing, but you should know as well.
You may uncover a reaction to what you are taking especially if your doctor does not know what you are doing. That's especially true of alternate medications which may work against what is prescribed. ]