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21 Cards in this Set
- Front
- Back
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What are conchae?
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Two nasal conchae, which are scrolls of thin cartilage and bone, divide the nasal cavity into 4 meatus
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What are meatus?
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spaces between the conchae
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How many meatus?
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meatus are dorsal, middle, ventral and common
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Location of the dorsal meatus:
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between the roof of the nasal cavity and the dorsal concha
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Location of the middle meatus:
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between the dorsal and ventral concha
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Location of the ventral meatus:
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between the ventral concha and the floor of the nasal cavity
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Location of the dorsal concha?
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extends from the cribiform plate to the level of the first maxillary premolars
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Location of the ventral concha:
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extends from the levels of the last maxillary molars to the level of the first maxillary premolars
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Location of frontal and maxillary sinuses in relation to nasal cavity:
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located dorsal to and lateral to the nasal cavity
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Location of sphenopalatine sinus in relation to the nasal cavity:
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ventral
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Location of the dorsal, middle, and ventral conchal sinuses in relation to nasal cavity:
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caudal to the nasal cavity
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Communication of the sinuses with the nasal cavity:
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maxillary sinus is the only sinus that communicates directly with the nasal cavity, other sinuses communicate with the maxillary sinus
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Communication between the maxillary sinus and the nasal cavity:
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nasal maxillary opening
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Location of nasomaxillary opening:
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caudal aspect of the middle meatus
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How does the frontal sinus communicate with maxillary sinus?
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with the caudal maxillary sinus through the dorsally located frontomaxillary opening
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Location of frontomaxillary opening:
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level of the lacrimal canal and medial wall of the orbit
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How does the dorsal conchal sinus communication with the maxillary sinus?
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dorsal conchal sinus communicates openly with the frontal sinus, frontal sinus communicates with CMS via FMO
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What is the conchofrontal sinus?
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combined dorsal conchal and frontal sinus
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How does the sphenopalatine sinus communicate with the caudal maxillary sinus?
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over the infraorbital canal
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How does the ventral conchal sinus communicate with the maxillary sinus?
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over the rostral infraorbital canal within the RMS
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What tooth roots are associated with the maxillary sinus?
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root of the first molar (09) is within the rostral maxillary sinus and the roots of the second and third molars (10, 11) are within the caudal maxillary sinus
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