This MedLibrary.org supplementary page on Medullary pyramids is provided directly from the open source Wikipedia as a service to our readers. Please see the note below on authorship of this content, as well as the Wikipedia usage guidelines. To search for other content from our encyclopedia supplement, please use the form below:
Related Sponsors
| Brain: Pyramid of medulla oblongata | ||
|---|---|---|
 |
||
| Medulla oblongata and pons. Anterior surface. (Pyramid visible at center.) | ||
 |
||
| Section of the medulla oblongata at about the middle of the olive. (Pyramid visible at bottom center.) | ||
| Latin | pyramis medullae oblongatae | |
| Gray's | subject #187 768 | |
| NeuroNames | hier-702 | |
| Dorlands/Elsevier | p_44/12683083 | |
The anterior or ventral portion of the medulla oblongata is named the pyramid and lies between the anterior median fissure and the antero-lateral sulcus.
Its upper end is slightly constricted, and between it and the pons the fibers of the abducent nerve emerge; a little below the pons it becomes enlarged and prominent, and finally tapers into the anterior funiculus of the medulla spinalis, with which, at first sight, it appears to be directly continuous.
See also
- Corticospinal tract (also known as "pyramidal tract")
- Decussation of the pyramids
Additional images
 The formatio reticularis of the medulla oblongata, shown by a transverse section passing through the middle of the olive. |
 Dissection showing the projection fibers of the cerebellum. |
 Human brainstem anterior view |
External links
- pyramid+of+medulla+oblongata at eMedicine Dictionary
- Diagram at csus.edu
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.
 |
This neuroscience article is a stub. You can help Wikipedia by expanding it. |
Wikipedia content modification information:
- This page was last modified on 25 August 2008, at 04:35.
Wikipedia Authorship and Review
Wikipedia content provided here is not reviewed directly by MedLibrary.org. Wikipedia content is authored by an open community of volunteers and is not produced by or in any way affiliated with MedLibrary.org.
Wikipedia Usage Guidelines
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article on "Medullary pyramids".
The URL for this specific entry is:
All Wikipedia text is available under the terms of the GNU Free Documentation License. (See Copyrights for details). Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc.