Illustrated anatomical parts with images from e-Anatomy and descriptions of anatomical structures
General Anatomy >
Bones; Skeletal system >
Axial skeleton >
Sphenoid bone >
Body of sphenoid bone >
Sphenoidal sinus >
Opening of sphenoidal sinus
Round opening at the upper part of each sphenoidal sinus by which it communicates with the upper and back part of the nasal cavity and occasionally with the posterior ethmoidal air cells.
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