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23 Cards in this Set
- Front
- Back
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NASAL CAVITY |
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What is the nasal cavity? |
inner space of the nose |
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what are the nares of the nasal cavity separated by? |
Nasal septum |
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Each lateral wall of the nasal septum have three projecting structures called what? |
Nasal Conchae which extends inwards |
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Beneath each nasal conchae there are what? |
openings through which the paranasal sinuses (nasolacrimal duct) communicate with the nasal cavity |
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The posterior part of the nasal cavity communicates with what? |
Nasopharynx and then with the rest of the respiratory system |
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HISTOLOGY OF NASAL CAVITY MUCOSA |
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What is the nasal cavity lined by? |
Respiratory mucosa |
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PARANASAL SINUSES |
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what are paranasal sinuses |
paired, air filled cavities in bone that include the
frontal sphenoidal Ethmoidal maxillary sinuses |
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What do the paranasal sinuses serve as? (3) |
lighten the skull bones Act as sound resenators provide mucus for the nasal cavity |
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What are paranasal sinuses lined with? |
Respiratory mucosa |
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Maxillary sinuses at birth are what? |
Small |
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How long do maxillary sinuses grow? |
Grow until puberty |
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When are maxillary sinuses fully developed? |
when all the permanent teeth have erupted in early adulthood |
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Ethmoidal sinuses at birth are what? |
Only a few are present |
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When do ethmoidal sinuses start to grow |
at the ages of 6 to 8 |
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Both the frontal and sphenoidal sinuses are what at birth |
Are not present |
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At what age do two anterior ethmoidal sinuses grow into the frontal bone to form the frontal sinuse on both sides? |
Age 2 |
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When are frontal sinuses visible on radiographs |
Age 7 |
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The 2 posterior ethmoidal sinuses grow into the sphenoidal bone to form what? |
The Spenoidal sinuses |
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How are sphenoidal sinuses formed? |
2 posterior ethmoidal sinuses grow into the spenoidal bone |
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How are frontal sinuses formed? |
2 anterior ethmoidal sinuses grow into the frontal bone |
