First paranasal sinus to develop at bih is:

Question

Accepted Answer

A. Maxillary. Development of SinusesSinusGestational Month WhenDevelopment StasPresent in ClinicallySignificant SizeFully DevelopedMaxillary2degBihdeg12 yearsdegEthmoid30Bihdeg12 yearsdegFrontal4deg3 yearsdeg18-20 yearsdegSphenoid3deg8 yearsdeg12-15 yearsdeg

Answer

B. Ethmoidal

Answer

C. Frontal

Answer

D. Sphenoidal

First paranasal sinus to develop at bih is:

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First paranasal sinus to develop at bih is:

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