Spinal veins: Difference between revisions

Latest revision as of 11:34, 15 February 2025

Spinal Veins[edit]

Diagram of the spinal veins and their connections.

The spinal veins are a network of veins that drain the spinal cord and the surrounding structures. They are part of the venous system of the central nervous system and play a crucial role in maintaining the cerebrospinal fluid dynamics and intracranial pressure.

Anatomy[edit]

The spinal veins are divided into two main groups: the internal and external venous plexuses.

Internal Venous Plexus[edit]

The internal venous plexus is located within the vertebral canal and consists of anterior and posterior components:

Anterior Internal Venous Plexus: This plexus is situated in front of the spinal cord and receives blood from the anterior spinal veins.
Posterior Internal Venous Plexus: Located behind the spinal cord, it drains the posterior spinal veins.

These plexuses are interconnected and communicate with the dural venous sinuses in the cranial cavity.

External Venous Plexus[edit]

The external venous plexus surrounds the vertebrae and is divided into anterior and posterior parts:

Anterior External Venous Plexus: Found on the anterior surface of the vertebral bodies, it drains into the vertebral veins.
Posterior External Venous Plexus: Located on the posterior aspect of the vertebrae, it connects with the intercostal veins and lumbar veins.

Function[edit]

The spinal veins are responsible for draining deoxygenated blood from the spinal cord and the vertebral column. They also help in regulating the cerebrospinal fluid pressure by providing a pathway for the venous blood to exit the central nervous system.

Clinical Significance[edit]

The spinal veins can be involved in various pathological conditions such as:

Spinal cord injury: Damage to the spinal veins can lead to hematoma formation and increased intracranial pressure.
Spinal arteriovenous malformation: Abnormal connections between the spinal arteries and veins can cause neurological deficits.

Related Pages[edit]

@@ Line 1: / Line 1: @@
-'''Spinal veins''' are veins that drain blood from the [[vertebral column]]. They are part of the [[vertebral venous plexus]], a network of veins that runs inside and outside the vertebral column.
+== Spinal Veins ==
-==Etymology==
+[[File:Gray770-vessels.png|thumb|right|Diagram of the spinal veins and their connections.]]
-The term "spinal" comes from the Latin word "spina," which means "thorn" or "backbone." The term "vein" comes from the Latin word "vena," which means "blood vessel."
-==Anatomy==
+The '''spinal veins''' are a network of veins that drain the [[spinal cord]] and the surrounding structures. They are part of the [[venous system]] of the [[central nervous system]] and play a crucial role in maintaining the [[cerebrospinal fluid]] dynamics and [[intracranial pressure]].
-The spinal veins are divided into three groups: the internal vertebral venous plexuses, the external vertebral venous plexuses, and the basivertebral veins.
-The '''internal vertebral venous plexuses''' are located inside the vertebral canal, running along the posterior and anterior surfaces of the vertebral bodies. They drain blood from the [[vertebral bodies]], the [[spinal cord]], and its meninges.
+=== Anatomy ===
-The '''external vertebral venous plexuses''' are located outside the vertebral canal, running along the anterior and posterior surfaces of the vertebral bodies. They drain blood from the vertebral bodies, the [[intervertebral discs]], and the [[spinal nerves]].
+The spinal veins are divided into two main groups: the internal and external venous plexuses.
-The '''basivertebral veins''' are located inside the vertebral bodies, draining blood from their inner parts.
+==== Internal Venous Plexus ====
-==Function==
+The internal venous plexus is located within the [[vertebral canal]] and consists of anterior and posterior components:
-The spinal veins drain deoxygenated blood from the vertebral column and return it to the heart. They also play a role in the cooling of the spinal cord, as the blood they carry away helps to dissipate heat generated by the spinal cord's metabolic activities.
-==Clinical significance==
+* '''Anterior Internal Venous Plexus''': This plexus is situated in front of the [[spinal cord]] and receives blood from the [[anterior spinal veins]].
-Diseases and conditions that can affect the spinal veins include [[vertebral osteomyelitis]], [[spinal cord infarction]], and [[spinal epidural abscess]]. These conditions can lead to serious complications, including paralysis and death, if not promptly diagnosed and treated.
+* '''Posterior Internal Venous Plexus''': Located behind the spinal cord, it drains the [[posterior spinal veins]].
-==See also==
+These plexuses are interconnected and communicate with the [[dural venous sinuses]] in the [[cranial cavity]].
-* [[Vertebral artery]]
+==== External Venous Plexus ====
+The external venous plexus surrounds the vertebrae and is divided into anterior and posterior parts:
+* '''Anterior External Venous Plexus''': Found on the anterior surface of the vertebral bodies, it drains into the [[vertebral veins]].
+* '''Posterior External Venous Plexus''': Located on the posterior aspect of the vertebrae, it connects with the [[intercostal veins]] and [[lumbar veins]].
+=== Function ===
+The spinal veins are responsible for draining deoxygenated blood from the spinal cord and the vertebral column. They also help in regulating the [[cerebrospinal fluid]] pressure by providing a pathway for the venous blood to exit the [[central nervous system]].
+=== Clinical Significance ===
+The spinal veins can be involved in various pathological conditions such as:
+* '''[[Spinal cord injury]]''': Damage to the spinal veins can lead to [[hematoma]] formation and increased [[intracranial pressure]].
+* '''[[Spinal arteriovenous malformation]]''': Abnormal connections between the spinal arteries and veins can cause [[neurological deficits]].
+== Related Pages ==
+* [[Spinal cord]]
+* [[Venous system]]
+* [[Cerebrospinal fluid]]
 * [[Vertebral column]]
-* [[Vertebral venous plexus]]
-==References==
-<references />
+[[Category:Anatomy of the nervous system]]
 [[Category:Veins]]
-[[Category:Spinal cord]]
-{{stub}}