Tim Taylor is a senior writer at Innerbody Research focusing on human anatomy and physiology. Tim earned both his Bachelor of Science degree in Biology and his Master's degree in Teaching from the University of Pittsburgh.

Last updated: May 5th, 2025

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A sphenoidal sinus is on each side of the sphenoid bone. The sphenoidal sinuses are separated by a bony septum that projects downward into the nasal cavity.

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