jocelyntrevino5 jocelyntrevino5

24-06-2020
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A sinus is defined as?

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mirandarose04 mirandarose04

24-06-2020

a cavity within a bone or other tissue, especially one in the bones of the face or skull connecting with the nasal cavities.

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LittleStudent LittleStudent

24-06-2020

Answer:

An air-filled cavity in a dense portion of a skull bone. The sinuses decrease the weight of the skull. The sinuses are formed in four right-left pairs. The frontal sinuses are positioned behind the forehead, while the maxillary sinuses are behind the cheeks.

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