Information about Sinus Ostia
A sinus ostium (plural: sinus ostia) is the opening that connects a sinus to the nasal cavity itself. It is a tight area that tends to have a higher percentage of cilia than the surrounding mucosa.
If the sinus ostium is blocked, the entire sinus thus becomes the pathologic cavity or cystlike lesion. As mucus is accumulated and the sinus cavity has filled, the increase in intraantral pressure results in a thinning, displacement and, in some cases, destruction of the sinus walls. If the mucocele becomes infected, it is called a pyocele or a mucopyocele.
Source: Oral Radiology: Principles and Interpretation. 5th edition. White and Pharaoah. p. 585.
If the sinus ostium is blocked, the entire sinus thus becomes the pathologic cavity or cystlike lesion. As mucus is accumulated and the sinus cavity has filled, the increase in intraantral pressure results in a thinning, displacement and, in some cases, destruction of the sinus walls. If the mucocele becomes infected, it is called a pyocele or a mucopyocele.
Source: Oral Radiology: Principles and Interpretation. 5th edition. White and Pharaoah. p. 585.
Sinus may refer to:
In anatomy, where a sinus is a sac or cavity in any organ or tissue:
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In anatomy, where a sinus is a sac or cavity in any organ or tissue:
- Paranasal sinus, an air cavity in the cranial bones, especially those near the nose
- Sinus (anatomy), description of the general term
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The nasal cavity (or nasal fossa) is a large air-filled space above and behind the nose in the middle of the face.
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Function
The nasal cavity conditions the air to be received by the areas of the respiratory tract...... Click the link for more information.
cilium (plural cilia) is an organelle found in eukaryotic cells. Cilia are thin, tail-like projections extending approximately 5–10 micrometers outwards from the cell body.
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The mucous membranes (or mucosae; singular: mucosa) are linings of mostly endodermal origin, covered in epithelium, and are involved in absorption and secretion. They line various body cavities that are exposed to the external environment and internal organs.
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