The nose contains shelf-like structures called
turbinates, which help trap particles entering
the nasal passages. Material deposited in the nose
is transported by ciliary action to the back of
the throat in 10-15 minutes. Cold viruses are believed
to be carried to the back of the throat where they
are deposited in the area of the adenoid. The adenoid
is a lymph gland structure that contains cells
to which cold viruses attach.
