WordNet

work as an intern; "The young doctor is interning at the Medical Center this year"
an advanced student or graduate in medicine gaining supervised practical experience (`houseman is a British term) (同)interne, houseman, medical intern
deprive of freedom; "During WW II, Japanese were interned in camps in the West"
a network of intersecting blood vessels or intersecting nerves or intersecting lymph vessels (同)rete
of or relating to or constituting vertebrae

PrepTutorEJDIC

(特に戦時中)〈人・船など〉‘を'強制収容する,抑留する
(神経・血管などの)網状組織
脊椎骨の;脊椎骨から成る
〈死体〉‘を'埋葬する

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2016/04/15 21:22:15」(JST)

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The internal vertebral venous plexuses (intraspinal veins) lie within the vertebral canal in the epidural space,^[1] and receive tributaries from the bones and from the medulla spinalis.

They form a closer network than the external plexuses, and, running mainly in a vertical direction, form four longitudinal veins, two in front and two behind; they therefore may be divided into anterior and posterior groups.

The anterior internal plexuses consist of large veins which lie on the posterior surfaces of the vertebral bodies and intervertebral fibrocartilages on either side of the posterior longitudinal ligament; under cover of this ligament they are connected by transverse branches into which the basivertebral veins open.
The posterior internal plexuses are placed, one on either side of the middle line in front of the vertebral arches and ligamenta flava, and anastomose by veins passing through those ligaments with the posterior external plexuses.

The anterior and posterior plexuses communicate freely with one another by a series of venous rings (retia venosa vertebrarum), one opposite each vertebra.

Around the foramen magnum they form an intricate network which opens into the vertebral veins and is connected above with the occipital sinus, the basilar plexus, the condyloid emissary vein, and the rete canalis hypoglossi.

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

^ Moore, Keith (2010). Clinically Oriented Anatomy. Philadelphia: Lippincott Williams and Wilkins. pp. 472–3. ISBN 978-0-7817-7525-0.

External links

Atlas image: abdo_wall77 at the University of Michigan Health System - "Venous Drainage of the Vertebral Column"

This cardiovascular system article is a stub. You can help Wikipedia by expanding it.

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「内椎骨静脈叢」

Internal vertebral venous plexuses
	Transverse section of a thoracic vertebra, showing the vertebral venous plexuses.
	Median sagittal section of two thoracic vertebrae, showing the vertebral venous plexuses.
Details
Identifiers
Latin	plexus venosi vertebrales interni
Dorlands; /Elsevier	p_24/12648710
TA	A12.3.07.021; A12.3.07.026
FMA	4881
	Anatomical terminology [edit on Wikidata]