WordNet

located at or near or behind a part or near the end of a structure
a thin pliable sheet of material
a pliable sheet of tissue that covers or lines or connects the organs or cells of animals or plants (同)tissue layer
of or relating to the occiput; "occipital bone"

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《名詞の前にのみ用いて》(生物学的に,位置が)後ろの,後部の / (時間・順序が)後の;(…より)後の《+『to』+『名』》(later) / しり(buttocks)
(生物の)膜,皮膜

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/05/21 19:17:40」(JST)

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The posterior atlantooccipital membrane (posterior atlantooccipital ligament) is a broad but thin membrane. It is connected above to the posterior margin of the foramen magnum and below to the upper border of the posterior arch of the atlas.

On each side of this membrane there is a defect above the groove for the vertebral artery which serves as an opening for the entrance of the artery. The suboccipital nerve also passes through this defect.

The free border of the membrane arches over the artery and nerve and is sometimes ossified.

The membrane is deep to the Recti capitis posteriores minores and Obliqui capitis superiores and is superficial to the dura mater of the vertebral canal to which it is closely associated.

Additional images

Median sagittal section through the occipital bone and first three cervical vertebræ.

References

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

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

UpToDate Contents

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English Journal

Posterior fossa decompression combined with resection of the cerebellomedullary fissure membrane and expansile duraplasty: a radical and rational surgical treatment for Arnold-Chiari type I malformation.

Liang CJ1, Dong QJ, Xing YH, Shan M, Wen LX, Qiang ZY, Ping ZQ, Tao PZ, Ping HX.
Cell biochemistry and biophysics.Cell Biochem Biophys.2014 Dec;70(3):1817-21. doi: 10.1007/s12013-014-0135-x.
This study aims to introduce a new surgical procedure for the treatment of Arnold-Chiari type I malformation (ACM-1) and to compare its effectiveness with the techniques described in previous studies. We performed the following procedures: foramen magnum decompression combined with the removal of bo
PMID 25018150

Posterior atlanto-occipital and atlanto-axial area and its surgical interest.

Pimenta NJ1, Gusmão SS2, Kehrli P3.
Arquivos de neuro-psiquiatria.Arq Neuropsiquiatr.2014 Oct;72(10):788-92.
Classic anatomical studies describe two membranes - atlanto-occipital and atlanto-axial in the posterior aspect of the craniocervical region. During many surgical procedures in this area, however, we have not found such membranes.OBJECTIVE: To clarify the anatomical aspects and structures taking par
PMID 25337732

Improving the endoscopic endonasal transclival approach: the importance of a precise layer by layer reconstruction.

Iacoangeli M1, Di Rienzo A, di Somma LG, Moriconi E, Alvaro L, Re M, Salvinelli F, Carassiti M, Scerrati M.
British journal of neurosurgery.Br J Neurosurg.2014 Apr;28(2):241-6. doi: 10.3109/02688697.2013.835375. Epub 2013 Sep 6.
BACKGROUND. The endoscopic endonasal transclival approach (EETCA) is a minimally-invasive technique allowing a direct route to the base of implant of clival lesions with reduced brain and neurovascular manipulation. On the other hand, it is associated with potentially severe complications related to
PMID 24011138

Japanese Journal

Magnetic Resonance Imaging Assessment of Craniovertebral Ligaments and Membranes After Whiplash Trauma

Spine 31(24), 2820-2826, 2006-11-15
NAID 10020586206

Configuration of the Connective Tissue in the Posterior Atlanto-Occipital Interspace : A Sheet Plastination and Confocal Microscopy Study

Spine 30(12), 1359-1366, 2005-06-15
NAID 10020582869

Anatomical Study of Occipitovertebral Anastomosis

The Showa University Journal of Medical Sciences 6(1), 41-47, 1994
NAID 130004070333

「後環椎後頭膜」

Posterior atlantooccipital membrane
	Posterior atlantooccipital membrane and atlantoaxial ligament. (Posterior atlantooccipital membrane is topmost gray region at center.)
Details
Latin	membrana atlantooccipitalis posterior
Identifiers
Gray's	p.296
Dorlands; /Elsevier	m_08/12521997
TA	A03.1.08.004
FMA	25006
	Anatomical terminology