Spinal canal: Difference between revisions
No edit summary |
Undid revision 314449909 by 76.105.153.80 (talk) |
||
| Line 14: | Line 14: | ||
DorlandsSuf = 12208918 | |
DorlandsSuf = 12208918 | |
||
}} |
}} |
||
The '''spinal canal''' (or '''vertebral canal''' or '''spinal cavity''') is the space in [[vertebra]]e through which the [[spinal cord]] passes. It is a process of the dorsal [[human body cavity]]. This canal is enclosed within the [[vertebral foramen]] of the [[vertebrae]]. In the intervertebral spaces, the canal is protected by the [[ligamentum flavum]] posteriorly and the [[posterior longitudinal ligament]] anteriorly. |
The '''spinal canal''' (or '''vertebral canal''' or '''spinal cavity''') is the space in [[vertebra]]e through which the [[spinal cord]] passes. It is a process of the dorsal [[human body cavity]]. This canal is enclosed within the [[vertebral foramen]] of the [[vertebrae]]. In the intervertebral spaces, the canal is protected by the [[ligamentum flavum]] posteriorly and the [[posterior longitudinal ligament]] anteriorly. |
||
| ⚫ | The outermost layer of the [[meninges]], the [[dura mater]], is closely associated with the [[arachnoid]] which in turn is loosely connected to the innermost layer of the [[meninges]], 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 a corresponding spinal veins. The spinal arteries form [[anastomoses]] known as the [[vasocorona]] of the spinal cord. The epidural space contains loose fatty tissue, and a network of large, thin-walled blood vessels called the [[anterior vertebral venous plexus]] and the [[posterior vertebral venous plexus]] |
||
| ⚫ | The outermost layer of the [[meninges]], the [[dura mater]], is closely associated with the [[arachnoid]] which in turn is loosely connected to the innermost layer of the [[meninges]], 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 a corresponding spinal veins. The spinal arteries form [[anastomoses]] known as the [[vasocorona]] of the spinal cord. The epidural space contains loose fatty tissue, and a network of large, thin-walled blood vessels called the [[anterior vertebral venous plexus]] and the [[posterior vertebral venous plexus]] |
||
The spinal canal was first described by [[Jean Fernel]]. |
The spinal canal was first described by [[Jean Fernel]]. |
||
Revision as of 03:54, 20 September 2009
| Spinal canal | |
|---|---|
 A typical thoracic vertebra, viewed from above. (Spinal canal is not labeled, but the hole in the center would comprise part of a spinal canal.) | |
 Human body cavities: The spinal canal is called spinal cavity to the left | |
| Details | |
| Identifiers | |
| Latin | c. vertebralis |
| MeSH | D013115 |
| TA98 | A02.2.00.009 |
| TA2 | 1009 |
| FMA | 9680 |
| Anatomical terminology | |
The spinal canal (or vertebral canal or spinal cavity) is the space in vertebrae through which the spinal cord passes. It is a process of the dorsal human body cavity. This canal is enclosed within the vertebral foramen of the vertebrae. In the intervertebral spaces, the canal is protected by the ligamentum flavum posteriorly and the posterior longitudinal ligament anteriorly.
The outermost layer of the meninges, the dura mater, is closely associated with the arachnoid which in turn is loosely connected to the innermost layer of the meninges, 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 a corresponding spinal veins. The spinal arteries form anastomoses known as the vasocorona of the spinal cord. The epidural space contains loose fatty tissue, and a network of large, thin-walled blood vessels called the anterior vertebral venous plexus and the posterior vertebral venous plexus
The spinal canal was first described by Jean Fernel.
External links
 | This human musculoskeletal system article is a stub. You can help Wikipedia by expanding it. |