Sulcus limitans

This article is about the structure in the fourth ventricle. For the structure in the developing nervous system, see Sulcus limitans (neural tube).

Structure in the human brain

Sulcus limitans

Rhomboid fossa. (Sulcus limitans not labeled, but region is visible.)

Human caudal brainstem posterior view (The sulcus limitans separates #2 from #4.)

Details
Identifiers
Latin| sulcus limitans fossae rhomboideae
NeuroNames| 629
Anatomical terms of neuroanatomy

[edit on Wikidata]

The sulcus limitans is a groove on either side of the midline in the rhomboid fossa (floor of the fourth ventricle).[1] It separates the cranial nerve motor nuclei (located medial), and the sensory nuclei (located lateral).[2][1] It is parallel to the median sulcus.[citation needed]

## References

[edit]

1. ^ a b "sulcus limitans ventriculi quarti". TheFreeDictionary.com. Retrieved 2023-06-08.
2. ^ Nolte, John. The Human Brain 6th ed. p.685. Mosby Inc.

## External links

[edit]

* Diagram of the sulcus limitans
* Sectional Atlas: Pons at the Abducens Nucleus - Facial Colliculus

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Anatomy of the pons

Dorsal/
(tegmentum)|

| Surface|

* Cerebellopontine angle
* Superior medullary velum
* Sulcus limitans
* Medial eminence
* Facial colliculus

|

White: Sensory|

* Trapezoid body
* Trigeminal lemniscus
* Dorsal trigeminal tract
* Ventral trigeminal tract
* Medial lemniscus
* Lateral lemniscus
* Central tegmental tract
* Medial longitudinal fasciculus
* Vestibulo-oculomotor fibers

White: Motor|

* Inferior cerebellar peduncle
* Vestibulocerebellar tract
* Medial longitudinal fasciculus
* Vestibulospinal tract
* Medial vestibulospinal tract
* Lateral vestibulospinal tract

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

Grey: Other nuclei|

* Pedunculopontine nucleus
* Apneustic center
* Pneumotaxic center
* Parabrachial nuclei
* Subparabrachial nucleus
* Medial parabrachial nucleus
* Lateral parabrachial nucleus
* Superior olivary nucleus
* Locus coeruleus

Ventral/
(base)|

| Grey|

* Pontine nuclei

|

White: Motor/descending|

* Corticospinal tract
* Corticobulbar tract
* Corticopontine fibers
* MCP
* Pontocerebellar fibers

Surface|

* Basilar sulcus

Other grey: Raphe/
reticular|

* Reticular formation
* Caudal
* Oral
* Tegmental
* Paramedian
* Raphe nuclei
* Median

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Ventricular system of the human brain

Lateral ventricles|

* Body
* Lamina affixa
* Stria terminalis
* Collateral eminence
* Occipital horn
* Calcar avis
* Septum pellucidum

Third ventricle|

* Recesses
* Optic recess
* Infundibular recess
* Suprapineal recess
* Pineal recess
* Hypothalamic sulcus
* Tela choroidea
* Subfornical organ
* Posterior commissure

Fourth ventricle|

| Roof|

* Superior medullary velum
* Frenulum
* Inferior medullary velum
* Taenia
* Fastigium

|

Floor|

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

Apertures|

* Median/Magendie
* Lateral recess to Lateral/Luschka

Other|

* Rhomboid fossa
* Tela choroidea

Cerebrospinal fluid|

* Blood–brain barrier
* Cerebral aqueduct
* Interventricular foramina
* Perilymphatic duct

Related|

* Ventriculomegaly

Portal:

* Anatomy

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