emissary veins


Also found in: Dictionary, Thesaurus, Wikipedia.
Related to emissary veins: cavernous sinus

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.
References in periodicals archive ?
Cabanac and Brinnel placed the tips of ultrasonic probes on the heads of bald male volunteers at sites where emissary veins poke thorugh their tiny cranial conduits.
Since the few emissary veins with impressions remaining on fossil skulls link up to an extensive network of microscopic veins in the cranium, Cabanac and Brinnel's data support her theory that a venous "radiator" cools the human brain, Falk says.
Sustained exercise on the savanna helped to promote the evolution of brain-cooling emissary veins, as well as copious sweat glands in the face and scalp, dark skin and reduced body hair, she notes.
Cerebral blood drains through emissary veins and their smaller companion veins into "collecting sinuses" just beneath the skull, he says.
3D shaded surface display (Fig-6) and MIP images (Fig-7) showed the lesion was fed from both occipital and right superficial temporal arteries and was draining into scalp veins and dural sinuses through emissary veins.