What Are the Functions of the Sinuses

question 8

Multiple Choice

What are the functions of the sinuses?

• A) to drain fluid from the brain and to allow the brain to expand
• B) to give a resonant sound to the voice and to allow the brain to expand
• C) to lighten the skull and drain fluid from the brain
• D) to lighten the skull and give a resonant sound to the voice
• E) to allow the brain to expand and to lighten the skull

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