Paranasal sinuses anatomy

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the anatomy of the human head and neck

Alison E. Burke, Certified Medical Illustrator. Specializing in conceptualization, communication, and clarity. Versed in traditional and digital media, animation, and interactive design. Web gallery and online artist portfolio. Chicago, Illinois, United States.

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The maxillary sinus or ‘antrum’ is the largest of the sinuses. The orbit lies above and the hard palate with the roots of the second premolar and the first two molars form the floor. Medially the antrum is separated from the nose by the lateral nasal wall (made up of the middle + inferior turbinate bones, each with a corresponding recess or ‘meatus’ below it

The maxillary sinus or ‘antrum’ is the largest of the sinuses. The orbit lies above and the hard palate with the roots of the second premolar and the first two molars form the floor. Medially the antrum is separated from the nose by the lateral nasal wall (made up of the middle + inferior turbinate bones, each with a corresponding recess or ‘meatus’ below it

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Sinuses: We have 4 pair within the skull, named for the bone they're near: Frontal, Maxillary, Sphenoid & Ethmoid. When the sinus ostia(openings for mucous to move out of sinuses) become plugged – as can occur with allergy, anatomical narrowing or polyps,   mucous becomes thick and stagnant; oxygen level in the sinus drops, the cilia cannot function normally and bacteria are given an opportunity to grow and cause infection

Normal Sinus Function The sinuses are cavities within the cheek bones, around the eyes and behind the nose. Although their precise function is not known, it has been suggested that they play an important role in warming, moistening and filtering the air in the nasal cavity, resonating vocalized sound, and keeping the weight of the […]

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Sinus congestion often seems to be accompanied by excess pressure on the outer ears (as anyone who has shared a transcontinental flight with an infant can attest to) or fluid buildup in the canals....

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