Condylar canal

Condylar canal
Bone: Condyloid canal
Gray129.png
Occipital bone. Outer surface. (Condyloid canal visible at center left.)
Gray193.png
Base of the skull. Upper surface. (Condyloid canal not labeled, the occipital bone is visible at the bottom in blue, and the condyloid foramen is labeled at left, third from the bottom.)
Latin canalis condylaris
Gray's subject #31 131

The condylar canal (or condyloid canal) is a canal in the condyloid fossa of the lateral parts of occipital bone behind the occipital condyle. Resection of the rectus capitus posterior major and minor muscles reveals the bony recess leading to the condylar canal, which is situated posterior and lateral to the occipital condyle. It is immediately superior to the extradural vertebral artery, which is making a loop above the posterior C1 ring to enter the foramen magnum. The anteriomedial wall of the condylar canal thickens to join the foramen magnum rim and connect to the occipital condyle.

Through the condylar canal, the occipital emissary vein connects to the venous system including the suboccipital venous plexus, occipital sinus and sigmoid sinus.

It is not always present, and can have variations of being a single canal or multiple smaller canals in cluster.

Additional images

Condylar canal.jpg Bilateral condylar canals (arrows) above the vertebral arteries. Dr. Victor Yang 2009

External links

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.


Wikimedia Foundation. 2010.

Нужно сделать НИР?

Look at other dictionaries:

  • condylar canal — condyloid canal canalis condylaris …   Medical dictionary

  • Condylar resorption — An anatomical diagram of the condyloid process. Condylar resorption, also called idiopathic condylar resorption, ICR, and condylysis, is a Temporomandibular joint disorder in which one or both of the mandibular condyles are broken down in a bone… …   Wikipedia

  • canal — A duct or channel; a tubular structure. SEE ALSO: c., duct. SYN: canalis [TA]. [L. canalis] abdominal c. SYN: inguinal c.. accessory c. a channel leading from the root …   Medical dictionary

  • Optic canal — Bone: Optic foramen 1: Foramen ethmoidale 2: Canalis opticus 3: Fissura orbitalis superior 4: Fossa sacci lacrimalis 5: Sulcus infraorbitalis 6: Fissura orbitalis inferior 7: Foramen infraorbitale …   Wikipedia

  • Nasolacrimal canal — Bone: Nasolacrimal canal The lacrimal apparatus. Right side …   Wikipedia

  • Кости головы (череп) — …   Атлас анатомии человека

  • Outline of human anatomy — See also: Index of anatomy related articles Human anatomy, a branch of anatomy, is the scientific study of the morphology of the adult human. It is subdivided into gross anatomy and microscopic anatomy. Gross anatomy (also called topographical… …   Wikipedia

  • Posterior cranial fossa — Base of the skull. Upper surface. The Posterior cranial fossa is labeled in green. Latin fossa cranii posterior Gray s …   Wikipedia

  • Vein — A blood vessel that carries blood low in oxygen content from the body back to the heart. The deoxygenated form of hemoglobin (deoxyhemoglobin) in venous blood makes it appear dark. Veins are part of the afferent wing of the circulatory system… …   Medical dictionary

  • Bone — This article is about the skeletal organ. For other uses, see Bone (disambiguation) and Bones (disambiguation). For the tissue, see Osseous tissue. Drawing of a human femur Bones are rigid organs that constitute part of the endoskeleton of… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”