Emissary veins

Emissary veins
Vein: Emissary veins
Latin vena emissaria

The emissary veins are valveless veins which normally drain external veins of the skull into the dural venous sinuses. However, because they are valveless, pus can flow into the skull through them as well, making them a possible route for transmission of extracranial infection to get into the skull.

One important emissary vein communicates from outside the skull through the sphenoidal emissary foramen inferior to the zygomatic arch with the cavernous sinus on the inside of the skull. This is an important route for spread of infection because cranial nerves III, IV, V1, V2, and VI and the internal carotid pass through the cavernous sinus. Subsequent infection or inflammation in the cavernous sinus can result in damage to any of the cranial nerves that pass through it or meningitis. Also, rupturing the emissary veins will result in a subdural hematoma which will compress the brain.[1]

See also

There are also emissary veins passing through the Foramen Ovale,Jugular Foramen,Foramen Lacerum and Hypoglossal canal.

References

  1. ^ [1]

External links


Wikimedia Foundation. 2010.

Игры ⚽ Поможем сделать НИР

Look at other dictionaries:

  • emissary veins — a group of veins within the skull that drain blood from the venous sinuses of the dura mater to veins outside the skull …   Medical dictionary

  • emissary veins — a group of veins within the skull that drain blood from the venous sinuses of the dura mater to veins outside the skull …   The new mediacal dictionary

  • Emissary — may refer to: * Ambassador * Diplomat * The Subspace Emissary in Super Smash Bros. Brawl * Emissaries (album), an album by black metal group Melechesh * Emissary (hydraulics), channel by which an outlet is formed to carry off any stagnant body of …   Wikipedia

  • Emissary — Em is*sa*ry, a. 1. Exploring; spying. B. Jonson. [1913 Webster] 2. (Anat.) Applied to the veins which pass out of the cranium through apertures in its walls. [1913 Webster] …   The Collaborative International Dictionary of English

  • Вены Эмиссарные (Emissary Veins) — венозные анастомозы между венозными синусами твердой мозговой оболочки и наружными венами головы. Источник: Медицинский словарь …   Медицинские термины

  • emissary — /em euh ser ee/, n., pl. emissaries, adj. n. 1. a representative sent on a mission or errand: emissaries to negotiate a peace. 2. an agent sent on a mission of a secret nature, as a spy. 3. Anat. sending or coming out, as certain veins that pass… …   Universalium

  • emissary vein — em·is·sary vein em ə .ser ē n any of the veins that pass through apertures in the skull and connect the venous sinuses of the dura mater with veins external to the skull * * * vena emissaria …   Medical dictionary

  • emissary vein — noun one of several connecting veins in the scalp and head that drain blood from sinuses in the dura mater to veins outside the skull • Syn: ↑vena emissaria • Hypernyms: ↑vein, ↑vena, ↑venous blood vessel …   Useful english dictionary

  • Sphenoidal emissary foramen — Infobox Bone Name = Sphenoidal emissary foramen Latin = Foramen venosum GraySubject = 35 GrayPage = 150 Caption = Sphenoid bone. Upper surface. (Sphenoidal emissary foramen labeled at left, fourth from bottom.) Caption2 = Base of the skull. Upper …   Wikipedia

  • Condylar emissary vein — Vein: Condylar emissary vein Latin vena emissaria condylaris Condylar emissary vein is a vein connecting the suboccipital plexus of veins with the sigmoid sinus. Clinical significance Possible mode of transportation for disease into the cranium …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”