maxillary sinus ostium

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The Uncinate Process [Skeletal Specimen]
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The Uncinate Process [Skeletal Specimen]

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This right skeletal specimen clearly shows the uncinate process. The infundibulum is the air-containing space that is bounded by the uncinate process medially, the lamina papyracea laterally and the ethmoidal...

Natural Maxillary Sinus Ostium As Seen From Inside The Maxillary Sinus
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Natural Maxillary Sinus Ostium As Seen From Inside...

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The natural ostium of the maxillary sinus is hidden behind the posterior and inferior portion of the uncinate process and cannot normally be seen during a routine diagnostic endoscopic examination. The...

Accessory Maxillary Sinus Ostium [large]
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Accessory Maxillary Sinus Ostium [large]

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A large accessory maxillary sinus ostium is present through the posterior fontanelle of this left side. Note the prominent nasal septal spur protruding into the middle meatus and abutting against the...

Max Sinus Ostea
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Max Sinus Ostea

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This is a cadaveric coronal section cut through the plane of the maxillary ostia, showing the uncinate process bilaterally. Rote the relationship of the maxillary sinus to the orbit superiorly. The ethmoid...

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