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- etimología
Qué (quién) es pyramidal fibers of medulla oblongata - definición
WHITE MATTER STRUCTURES WITHIN THE BRAINSTEM'S MEDULLA OBLONGATA
Pyramidal decussation; Decussation of pyramids; Medullary pyramids; Pyramid of the medulla oblongata; Medullary pyramid; Pyramids of the medulla; Motor decussation; Pyramid of medulla; Decussation of the pyramids; Pyramid of medulla oblongata; Decussatio pyramidorum; Decussatio pyramidum; Pyramid (brainstem)
![Medulla oblongata and [[pons]]. Anterior surface. (Pyramid visible at center.)](https://commons.wikimedia.org/wiki/Special:FilePath/Gray679.png?width=200 "Medulla oblongata and [[pons]]. Anterior surface. (Pyramid visible at center.)")
![Sketch of the brainstem, with the [[pyramidal tract]] visible in red, and pyramidal decussation labeled at lower right.](https://commons.wikimedia.org/wiki/Special:FilePath/Gray684.png?width=200 "Sketch of the brainstem, with the [[pyramidal tract]] visible in red, and pyramidal decussation labeled at lower right.")
Medulla oblongata
![Medulla-animated as it protrudes from the [[foramen magnum]] of the [[skull-base]], after which it gives rise to the [[spinal cord]].](https://commons.wikimedia.org/wiki/Special:FilePath/Medulla oblongata and foramen magnum animation small.gif?width=200 "Medulla-animated as it protrudes from the [[foramen magnum]] of the [[skull-base]], after which it gives rise to the [[spinal cord]].")
![H&E-LFB stain]].](https://commons.wikimedia.org/wiki/Special:FilePath/Medulla oblongata - posterior - very low mag.jpg?width=200 "H&E-LFB stain]].")
STRUCTURE OF THE BRAIN STEM
Medulla Oblongata; The Vital Knot; The vital knot; Cardiac center; Foramen cecum (medulla oblongata); Bulbar; Medula oblongada; Medula oblongata; Medulla oblongada; Medula Oblongada; Closed medulla; Open medulla; Foramen caecum (medulla oblongata); Bulbar reflexes; Bulbar reflex; Oblongata; Foramen caecum of medulla oblongata; Retrotrapezoid nucleus
The medulla oblongata or simply medulla is a long stem-like structure which makes up the lower part of the brainstem. It is anterior and partially inferior to the cerebellum.
medulla oblongata
STRUCTURE OF THE BRAIN STEM
Medulla Oblongata; The Vital Knot; The vital knot; Cardiac center; Foramen cecum (medulla oblongata); Bulbar; Medula oblongada; Medula oblongata; Medulla oblongada; Medula Oblongada; Closed medulla; Open medulla; Foramen caecum (medulla oblongata); Bulbar reflexes; Bulbar reflex; Oblongata; Foramen caecum of medulla oblongata; Retrotrapezoid nucleus
[??bl??'g?:t?]
¦ noun the continuation of the spinal cord within the skull, forming the lowest part of the brainstem.
Origin
C17: mod. L., lit. 'elongated medulla'.
Bulbar
STRUCTURE OF THE BRAIN STEM
Medulla Oblongata; The Vital Knot; The vital knot; Cardiac center; Foramen cecum (medulla oblongata); Bulbar; Medula oblongada; Medula oblongata; Medulla oblongada; Medula Oblongada; Closed medulla; Open medulla; Foramen caecum (medulla oblongata); Bulbar reflexes; Bulbar reflex; Oblongata; Foramen caecum of medulla oblongata; Retrotrapezoid nucleus
·adj Of or pertaining to bulb; especially, in medicine, pertaining to the bulb of the spinal cord, or medulla oblongata; as, bulbar paralysis.
Wikipedia
Medullary pyramids (brainstem)
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).
