Editing Spinal canal (section)

== Structure ==
The vertebral canal is enclosed anteriorly by the vertebral bodies, intervertebral discs, and the [[posterior longitudinal ligament]]; it is enclosed posteriorly by the vertebral laminae and the [[ligamenta flava]]; laterally, it is incompletely enclosed by the [[Pedicle of the vertebral arch|pedicles]] with the interval between two adjacent pedicles on either side creating an [[intervertebral foramen]] (allowing the passage of the [[Spinal nerve|spinal nerves]] and radicular blood vessels).'''<ref name=":02">{{Cite book |last=Sinnatamby |first=Chummy S. |title=Last's Anatomy |publisher= |year=2011 |isbn=978-0-7295-3752-0 |edition=12th |pages=425}}</ref>'''

The vertebral canal progressively narrows inferiorly.'''<ref name=":02" />''' It is wider in the [[Cervical vertebrae|cervical region]] to accommodate the [[cervical enlargement]] of the spinal cord.<ref>{{Citation |last=Kim |first=Hak-Jin |title=Chapter 3 - Radiologic Anatomy of the Spine |date=2010-01-01 |url=http://www.sciencedirect.com/science/article/pii/B9780702029134000033 |work=Minimally Invasive Percutaneous Spinal Techniques |pages=46–57 |editor-last=Kim |editor-first=Daniel H. |access-date=2020-11-03 |place=New York |publisher=W.B. Saunders |language=en |doi=10.1016/b978-0-7020-2913-4.00003-3 |isbn=978-0-7020-2913-4 |editor2-last=Kim |editor2-first=Yong-Chul |editor3-last=Kim |editor3-first=Kyung-Hoon|url-access=subscription }}</ref><ref name="Haran">{{cite web |last1=Haran |first1=Crishan |title=Spinal canal {{!}} Radiology Reference Article {{!}} Radiopaedia.org |url=https://radiopaedia.org/articles/spinal-canal?lang=gb |website=Radiopaedia}}</ref>

=== Contents ===
{{More citations needed|section|date=November 2020}}
The outermost layer of the [[meninges]], the [[dura mater]], is closely associated with the [[arachnoid mater]] which in turn is loosely connected to the innermost layer, the [[pia mater]]. The meninges divide the spinal canal into the [[epidural space]] and the [[subarachnoid space]]. The [[pia mater]] is closely attached to the [[spinal cord]]. A [[subdural space]] is generally only present due to trauma and/or pathological situations. The [[subarachnoid space]] is filled with [[cerebrospinal fluid]] and contains the vessels that supply the [[spinal cord]], namely the [[anterior spinal artery]] and the paired [[posterior spinal arteries]], accompanied by corresponding [[spinal veins]]. The anterior and posterior spinal arteries form [[anastomoses]] known as the '''vasocorona''' of the spinal cord and these supply nutrients to the canal. The [[epidural space]] contains loose fatty tissue, and a network of large, thin-walled blood vessels called the [[internal vertebral venous plexuses]].{{Citation needed|date=June 2023}}