frontopontine fibers
{{Short description|Frontal lobe}}
{{Infobox brain
| Name = Frontopontine fibers
| Latin = fibrae frontopontinae
| Image = Tractography - Frontopontine tract - animation 1.gif
| Caption = Tractography of frontopontine fibers
| Image2 = Gray710.png
| Caption2 = Coronal section through mid-brain. {{ordered list |style=text-align: left;
|7=Red nucleus of tegmentum
|8=Oculomotor nerve, with 8’, its nucleus of origin
}}{{ordered list |list_style_type=lower-alpha |style=text-align: left;
|1=Lemniscus (in blue) with a’ the medial lemniscus and a" the lateral lemniscus
|2=Medial longitudinal fasciculus
|3=Raphé
|5=Portion of medial lemniscus, which runs to the lentiform nucleus and insula
|7=Frontopontine fibers
}}
| IsPartOf =
| Components =
| Artery =
| Vein =
| Acronym =
}}
The frontopontine fibers or frontopontine tract are corticopontine fibers projecting from the cortex of the frontal lobe to the pons. In the internal capsule, the fibers descend predominately in the anterior limb (but some also in the posterior limb), passing inferior to the thalamus to reach the mesencephalon (midbrain) where they descend in the medial portion of base of the cerebral peduncles. In the pons, the fibers flare out between the pontine nuclei.{{Cite book |last=Sinnatamby |first=Chummy S. |title=Last's Anatomy |vauthors= |publisher= |year=2011 |isbn=978-0-7295-3752-0 |edition=12th |pages=}}{{Rp|page=460}}
Pathways
Some of the frontopontine fibers participate in a pathway contributing to horizontal conjugate gaze:{{Rp|page=404}}
- Visual cortex → frontal eye fields (of the middle frontal gyrus) → frontopontine fibers → (contralateral) paramedian pontine reticular formation → (ipsilateral) abducens nucleus and (contralateral) oculomotor nucleus
References
{{Reflist}}
External links
{{Commons category}}
- [https://web.archive.org/web/20060920033533/http://www.neuropat.dote.hu/anastru/test2ha.htm Diagram at neuropat.dote.hu]
{{Mesencephalon}}
{{Medulla and pons of rhombencephalon}}
{{Portal bar|Anatomy}}
{{DEFAULTSORT:Frontopontine Fibers}}
Category:Cerebral white matter
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