To understand why a sore throat happens, it is useful to know a little about the upper respiratory tract, which is comprised of the nose and nasal passages, the sinuses, the pharynx and the larynx.

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The upper respiratory tract
To understand why a sore throat happens, it is useful to know a little about the upper respiratory tract, which is comprised of the nose and nasal passages, the sinuses, the pharynx and the larynx.

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