sinus of the dura mater

sinus of the dura mater
sinus of the dura mater n any of numerous venous channels (as the sagittal sinuses, straight sinus, and transverse sinuses) that are situated between the two layers of the dura mater, that have no valves, and that drain blood from the brain and the bones forming the cranium and empty it into the internal jugular vein called also dural sinus

Medical dictionary. 2011.

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  • Dura mater — Meninges of the CNS Gray s subject #193 872 MeSH …   Wikipedia

  • sinuses of dura mater — sinus durae matris [TA] large venous channels forming an anastomosing system between the layers of the cranial dura mater. They are devoid of valves, do not collapse when drained, and in some parts contain trabeculae. They drain the cerebral… …   Medical dictionary

  • sinus rectus — noun an unpaired sinus of the dura mater • Syn: ↑straight sinus, ↑tentorial sinus • Hypernyms: ↑venous sinus, ↑sinus …   Useful english dictionary

  • sinus thrombosis — thrombosis of a sinus of the dura mater, usually secondary to head injury or to infection of a nearby structure; called also intracranial t. and intracranial sinus t …   Medical dictionary

  • sinus — 1. [TA] A channel for the passage of blood or lymph, without the coats of an ordinary vessel; e.g., blood passages in the gravid uterus or those in the cerebral meninges. 2. [TA] A cavity or …   Medical dictionary

  • sinus transversus durae matris — [TA] transverse sinus of dura mater: either of two large sinuses of the dura mater that begin in a variable fashion at the confluence of the sinuses near the internal occipital protuberance. Each follows the attached margin of the tentorium… …   Medical dictionary

  • sinus cavernosus — [TA] cavernous sinus either of two sinuses of the dura mater, irregularly shaped and located at either side of the body of the sphenoid bone, extending from the medial end of the superior orbital fissure in front to the apex of the petrous… …   Medical dictionary

  • sinus rectus — [TA] straight sinus: one of the sinuses of the dura mater, situated in the line of union of the cerebral falx and the cerebellar tentorium, formed by the junction of the great cerebral vein and the inferior sagittal sinus, and ending in a… …   Medical dictionary

  • sinus — n. 1) an air cavity within a bone, especially any of the cavities within the bones of the face or skull (see paranasal sinuses). 2) any wide channel containing blood, usually venous blood. Venous sinuses occur, for example, in the dura mater and… …   The new mediacal dictionary

  • sinus petrosquamosus — [TA] petrosquamous sinus an inconstant sinus, one of the sinuses of the dura mater; it runs along the petrosquamous fissure, connecting posteriorly with the transverse sinus and anteriorly with the retromandibular vein …   Medical dictionary

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