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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).
Sulcus limitans
Rhomboid fossa. (Sulcus limitans not labeled, but region is visible.)
File:Human caudal brainstem posterior view description.JPG
Human caudal brainstem posterior view (The sulcus limitans separates #2 from #4.)
Latin Sulcus limitans fossae rhomboideae
Gray's p.799
NeuroNames hier-626
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Anatomical terms of neuroanatomy

In the floor of the fourth ventricle, the sulcus limitans separates the cranial nerve motor nuclei (medial) from the sensory nuclei (lateral).[1] In the superior part of the rhomboid fossa, it corresponds with the lateral limit of the fossa and presents a bluish-gray area, the locus ceruleus (which owes its color to an underlying patch of deeply pigmented nerve cells, termed the substantia ferruginea). The sulcus limitans can also be located by searching laterally from the medial eminence. It is parallel to the median sulcus.


This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

  1. ^ Nolte, John. The Human Brain 6th ed. p.685. Mosby Inc.

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