What do you mean by head sinuses?

Fundamentals of Sectional Anatomy: An Imaging Approach
2nd Edition
ISBN:9781133960867
Author:Denise L. Lazo
Publisher:Denise L. Lazo
Chapter4: Neck
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What do you mean by head sinuses?

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Step 1
    1. Sinus

    2. Sinuses are a hollow air-filled cavity present inside the skull (forehead, facebone, around nose bridge).

    3. There are four types of sinuses-

    • Frontal sinus– present near the forehead.

    • Maxillary sinus- present near cheekbones.

    • Sphenoid sinus- present behind the eye.

    • Ethmoid sinus- present near the bridge of the nose.



Due to allergies and infections, sinuses get swell and secrets more mucus. This builds pressure in the sinuses which results in a severe headache.



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