sphenoidal emissary foramen

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sphe·noi·dal em·is·sar·y fo·ra·men

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.
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References in periodicals archive ?
The anterior compartment thus formed is known as sphenoidal emissary foramen. [8] This foramen serves as an expression of differentiation of cranial venous outlet, that is characteristic in humans and does not occur in any other primates.
Sphenoidal emissary foramen and its clinical consideration.