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BogglePyramid (brainstem)
From Wikipedia, the free encyclopedia
| Brain: Pyramid (brainstem) | ||
|---|---|---|
| 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 | |
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
Gray700.png The formatio reticularis of the medulla oblongata, shown by a transverse section passing through the middle of the olive. | Gray705.png Dissection showing the projection fibers of the cerebellum. | Human brainstem anterior view 2 description.JPG 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 As such, some of the information contained within it may be outdated.
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