emissary vein

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Related to Emissary veins: cavernous sinus
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Noun1.emissary vein - one of several connecting veins in the scalp and head that drain blood from sinuses in the dura mater to veins outside the skull
vein, vena, venous blood vessel - a blood vessel that carries blood from the capillaries toward the heart; "all veins except the pulmonary vein carry unaerated blood"
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Venous drainage of caudate lobe is by emissary veins which pass directly from caudate lobe to inferior vena cava.
Alpha-1 blockage leads to direct arteriolar dilatation, which results in an increased blood flow and decreased outflow secondary to effacement and subsequent obstruction of emissary veins.
The infection may spread from the face via the facial venous plexus, which connects to the valveless emissary veins into the cranium.
Septicemia and cavernous sinus involvement can develop by way of the emissary veins that drain the nasal septum.