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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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First sinus to develop -
assistant
The correct answer is  Ans. is 'b' i.e., Maxillary "Development of the maxillary sinus begins by the 65th day of gestation, making it the first sinus to develop in utero _________Essential otolaryngologyo Most common sinus affected by sinusitis overall- Maxillaryo Most common sinus affected in adult- Maxillaryo Most common sinus affected in children- Ethmoido Least common sinus affected- Sphenoido Sinuses involved in order of frequency- Maxillary > Frontal > Ethmoid > Sphenoid