Paranasal sinuses
- Philips Australia, Paid speaker at Philips Spectral CT events (ongoing)
Updates to Article Attributes
The paranasal sinuses usually consist of four paired air-filled spaces. They have several functions of which reducing the weight of the head is the most important. Other functions are air humidification and aiding in voice resonance. They are named for the facial bones in which they are located:
Variant anatomy
The paranasal sinuses are subject to marked variation between individuals and between sides in the same individual, regarding size (aeration) and bony septations.
total paranasal sinus agenesis - very rare 1
isolated frontal sinus agenesis - common
aerated Crista Galli
anterior clinoid process pneumatisation
-
protrusion and/or dehiscence of
optic nerve
maxillary nerves
vidian nerves
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pneumatisation of
anterior clinoid processes
pterygoid processes
greater wing of sphenoid
sphenoid sinus septa
attachementattachment on the bony canal of the optic nerve
-</ul><h4>Variant anatomy</h4><p>The paranasal sinuses are subject to marked variation between individuals and between sides in the same individual, regarding size (aeration) and bony septations. </p><ul>- +</ul><h4>Variant anatomy</h4><p>The paranasal sinuses are subject to marked variation between individuals and between sides in the same individual, regarding size (aeration) and bony septations.</p><ul>
-<li><p>Onodi cells</p></li>- +<li><p><a href="/articles/sphenoethmoidal-air-cell-1" title="Onodi cells">Onodi cells</a></p></li>
- +<li><p><a href="/articles/agger-nasi-cells" title="Agger nasi cells">agger nasi cells</a></p></li>
-<li><p>sphenoid sinus septa attachement on the bony canal of the optic nerve</p></li>- +<li><p>sphenoid sinus septa attachment on the bony canal of the optic nerve</p></li>
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