sphenoidal emissary foramen
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Related to Vesalius foramen: foramen ovale, Foramen lacerum
sphe·noi·dal em·is·sar·y fo·ra·men
[TA]a minute inconstant foramen in the greater wing of the sphenoid bone, anterior and medial to the foramen ovale, transmitting a small emissary vein from the cavernous sinus.