Sadiaabout 1 year ago
Sinuses
The sinuses are air-filled spaces in the skull. They are located behind the forehead, nasal bones, cheeks, and eyes. Healthy sinuses contain no bacteria or other germs. Most of the time, mucus is able to drain out and air is able to flow through the sinuses.
Other commentsSign in to post comments. You don't have an account? Sign up now!