Multiple choice

The cavities in the bones of the skull that open into the nasal cavity are known as

  1. nasopharynx

  2. sinuses

  3. nasal cavity

  4. pharynx

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The sinuses are hollow areas or cavities in the bones of the skull that are lined with mucous membranes and that open into the nasal cavity. The sinuses provide resonance for the voice. When the sinuses are inflammed and filled with mucus the voice has a different quality, often referred to as nasal in character.