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emissary veins

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emissary veins
[em′əser′ē]
Etymology: L, emittere, to send forth
the small vessels in the skull that connect the sinuses of the dura mater with the veins on the exterior of the skull through a series of anastomoses.


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Septicemia and cavernous sinus involvement can develop by way of the emissary veins that drain the nasal septum.
This occurs when emissary veins are damaged and blood accumulates in the potential space between the galea aponeurotica (epicranial aponeurosis) and the periosteum of the skull (pericraniaum).
Anatomical studies of humans indicate that the emissary veins belong to a dense web of microscopic veins draining blood from the brain to the vertebral plexus.
 
 
 
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