Medullary pyramids (brainstem)
| Medullary pyramids (brainstem) | |
|---|---|
Pons and medulla oblongata. Anterior surface. (Pyramids visible at center.) | |
Animation. Pyramids shown in green. | |
| Details | |
| Identifiers | |
| Latin | pyramis medullae oblongatae |
| NeuroNames | 705 |
| TA98 | A14.1.04.003 |
| TA2 | 5985 |
| FMA | 75254 |
| Anatomical terms of neuroanatomy | |
In neuroanatomy, the medullary pyramids are paired white matter structures of the brainstem's medulla oblongata that contain motor fibers of the corticospinal and corticobulbar tracts – known together as the pyramidal tracts. The lower limit of the pyramids is marked when the fibers cross (decussate).