Facial colliculus

Facial colliculus
Rhomboid fossa. (Colliculus facialis labeled at center left.)
Human caudal brainstem posterior view (Colliculus facialis is #3)
Details
Identifiers
Latin	colliculus facialis
NeuroNames	hier-621
TA	A14.1.05.705
FMA	78480
*Anatomical terms of neuroanatomy* [edit on Wikidata]

The facial colliculus is an elevated area located on the dorsal pons in the floor of the 4th ventricle. It is formed by fibers from the motor nucleus of the facial nerve as they loop over the abducens nucleus. Thus a lesion to the facial colliculus would result in ipsilateral facial paralysis and ipsilateral unopposed eye medial deviation.

Additional images

Axial section of the Brainstem (Pons) at the level of the Facial Colliculus
Fourth ventricle. Posterior view.Deep dissection.

External links

Anatomy of the pons

Dorsal/
(tegmentum)

Surface

White: Sensory

Medial longitudinal fasciculus
- Vestibulo-oculomotor fibers

White: Motor

Grey: Cranial nuclei

afferent:	GSA Trigeminal Principal Spinal Cochlear nucleus Dorsal Anterior Vestibular nuclei Superior

efferent:	SVE: Trigeminal motor nucleus Facial motor nucleus GSE: Abducens nucleus GVE: Superior salivary nucleus Inferior salivary nucleus

Other	Apneustic center Parabrachial area Pneumotaxic center Subparabrachial nucleus Medial parabrachial nucleus Lateral parabrachial nucleus Superior olivary nucleus Caerulean nucleus

Ventral/
(base)

Grey	Pontine nuclei

White: Motor/descending	Corticospinal tract Corticobulbar tract Corticopontine fibers MCP Pontocerebellar fibers

Surface	Basilar sulcus

Other grey: Raphe/
reticular

The ventricular system of the human brain

Lateral ventricles

Third ventricle

Fourth ventricle

Roof	Superior medullary velum Frenulum Inferior medullary velum Taenia

Floor	Upper Facial colliculus Locus coeruleus Lower Vagal trigone Hypoglossal trigone Area postrema Obex Medial eminence Sulcus limitans Fastigium

Apertures	Median/Magendie Lateral recess to Lateral/Luschka

Other	Rhomboid fossa Tela chorioidea

Cerebrospinal fluid

This article is issued from Wikipedia - version of the 11/22/2014. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.