The First Line of Defense That Prevents Microbes from Entering

Question

The first line of defense that prevents microbes from entering the body includes
A)phagocytes.
B)T lymphocytes.
C)skin.
D)interferons.

Accepted Answer

Skin is the outermost layer of the body that acts as a physical barrier, preventing microbes from entering the body. It also secretes sebum, which can lower the pH on the skin's surface, inhibiting the growth of some microbes. Other options listed, such as phagocytes, T lymphocytes, and interferons, are involved in the body's immune response but are not necessarily the first line of defense against microbes entering the body.