Decussation of the pyramids
|Brain: Decussation of the pyramids|
|Deep dissection of brain-stem. Lateral view. ("pyramidal tract" visible in red, and "pyramidal decussation" labeled at lower right.)|
|Gray's||subject #192 870|
When these pyramidal fibers are traced downward, it is found that some two-thirds or more of them leave the pyramids in successive bundles, and decussate in the anterior median fissure of the medulla oblongata, forming what is termed the pyramidal decussation.
Having crossed the middle line, they pass down in the posterior part of the lateral funiculus as the lateral cerebrospinal fasciculus.
Section of the medulla oblongata through the lower part of the decussation of the pyramids
- pyramidal+decussation at eMedicine Dictionary
- Anatomy Atlases - Microscopic Anatomy, plate 17.326 - "Medula Oblongata"
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