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Facial colliculus

From Wikipedia, the free encyclopedia

Facial colliculus
Rhomboid fossa. (Colliculus facialis labeled at center left.)
Human caudal brainstem posterior view (Colliculus facialis is #3)
Details
Identifiers
Latincolliculus facialis
NeuroNames624
TA98A14.1.05.705
FMA78480
Anatomical terms of neuroanatomy

The facial colliculus is an elevated area located in the pontine tegmentum (dorsal pons),[citation needed] within the floor of the fourth ventricle (i.e. the rhomboid fossa). It is formed by fibres from the facial motor nucleus looping over the abducens nucleus. The facial colliculus is an essential landmark of the rhomboid fossa.[1]

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Transcription

Anatomy

The facial colliculus occurs within the rhomboid fossa (i.e. the floor of the fourth ventricle) where it is placed lateral to its (midline) median sulcus.[1]

Structure

The facial colliculus is formed by brachial motor nerve fibres of the facial nerve (CN VII) looping over the (ipsilateral) abducens nucleus, forming a bump upon the surface.[1]

Clinical significance

A facial colliculus lesion would result in ipsilateral facial paralysis (i.e. Bell's palsy) and inhibited ipsilateral and unopposed contralateral eye deviation.[2]

Additional images

  • Axial section of the brainstem (pons) at the level of the facial colliculus
    Axial section of the brainstem (pons) at the level of the facial colliculus
  • Fourth ventricle. Posterior view. Deep dissection.
    Fourth ventricle. Posterior view. Deep dissection.

References

  1. ^ a b c Yoo, Hannah; Mihaila, Dana M. (2022), "Neuroanatomy, Facial Colliculus", StatPearls, Treasure Island (FL): StatPearls Publishing, PMID 32310367, retrieved 2023-01-01
  2. ^ Yoo, Hannah; Mihaila, Dana M. (2022), "Neuroanatomy, Facial Colliculus", StatPearls, Treasure Island (FL): StatPearls Publishing, PMID 32310367, retrieved 2022-03-26

External links


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This page was last edited on 3 April 2024, at 14:12
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