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Chapter 26. Sinonasal Development and Anatomy
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Which of the following anatomical structures does not arise from the ethmoid bone?
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Which of the following sites corresponds to the weakest portion of the anterior cranial fossa skull base?
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A. Junction of the posterior fovea ethmoidalis and lateral lamella
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B. Lateral lamella, at the site of insertion of the anterior ethmoid artery
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C. Skull base attachment of the middle turbinate
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D. Superior attachment of the perpendicular plate of the ethmoid bone
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Which of the following anatomic structures would be encountered first when extending a maxillary antrostomy posteriorly from the natural maxilary os toward the posterior maxillary sinus wall?
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C. Descending palatine artery
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D. Posterior septal artery
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Presence of an onodi cell places which of the following structures at greatest risk intraoperatively?
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Which of the following cells would most likely displace the frontal sinus drainage pathway laterally?
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A. Intersinus septal cell
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B. Supraorbital ethmoid cell
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