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Brain: Rhombencephalon
EmbryonicBrain.svg
Diagram depicting the main subdivisions of the embryonic vertebrate brain. These regions will later differentiate into forebrain, midbrain and hindbrain structures.
Gray708.svg
Scheme of roof of fourth ventricle.
Gray's subject #187 767
NeuroNames hier-531
MeSH Rhombencephalon
NeuroLex ID birnlex_942

The rhombencephalon (or hindbrain) is a developmental categorization of portions of the central nervous system in vertebrates.

The rhombencephalon can be subdivided in a variable number of transversal swellings called rhombomeres. In the human embryo eight rhombomeres can be distinguished, from caudal to rostral: Rh7-Rh1 and the isthmus (the most rostral rhombomere).

A rare disease of the rhombencephalon, "rhombencephalosynapsis" is characterized by a missing vermis resulting in a fused cerebellum. Patients generally present with cerebellar ataxia.

The caudal rhombencephalon has been generally considered as the initiation site for neural tube closure.[1]

Contents

Myelencephalon

Rhombomeres Rh7-Rh4 form the myelencephalon.

The myelencephalon forms the medulla oblongata in the adult brain; it contains:

Metencephalon

Rhombomeres Rh3-Rh1 form the metencephalon.

The metencephalon is composed of the pons and the cerebellum; it contains:

Additional images

References

  1. ^ SpringerLink - Journal Article

External links

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Wiktionary

Up to date as of January 15, 2010

Definition from Wiktionary, a free dictionary

German

Noun

Rhombencephalon

  1. hindbrain
  2. rhombencephalon

Simple English

Brain: Rhombencephalon
Diagram depicting the main subdivisions of the embryonic vertebrate brain. These regions will later differentiate into forebrain, midbrain and hindbrain structures.
Superficial dissection of brain-stem. Lateral view.
Gray's subject #187 767
NeuroNames hier-531
MeSH Rhombencephalon

The rhombencephalon (or hindbrain) is a name for parts of the central nervous system in vertebrates.

Additional images


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