Emboliform nucleus

Emboliform nucleus
Cross-section of the cerebellum. Emboliform nucleus labeled at bottom-left.
Details
Identifiers
Latin	nucleus emboliformis
NeuroNames	hier-685
NeuroLex ID	Emboliform Nucleus
TA	A14.1.07.409
FMA	72538
*Anatomical terms of neuroanatomy* [edit on Wikidata]

The emboliform nucleus (or anterior interposed nucleus) is a deep cerebellar nucleus that lies immediately to the medial side of the nucleus dentatus, and partly covering its hilum. It is one among the four pairs of deep cerebellar nuclei, which are from lateral to medial: the dentate, interposed (which consists of the emboliform and globose), and fastigial nuclei. These nuclei can be seen using Weigert's elastic stain.

Emboliform, from Ancient Greek, means "shaped like a plug or wedge".

Structure

The emboliform nucleus is a wedge-shaped structure of gray matter found at the medial side of the hilum of the dentate nucleus. Its neurons display a similar structure from those of the dentate nucleus. In some mammals the emboliform nucleus is continuous with the globose nucleus, forming together the interposed nucleus. When present, the interposed nucleus can be divided in an anterior and a posterior interposed nucleus, considered homologues of the emboliform and globose nuclei, respectively.^[1]

Function

As a part of the interposed nucleus, the emboliform participates in the spinocerebellum, a system that regulates the precision of limb movements.^[2] Axons leaving the emboliform exit through the superior cerebellar peduncle and reach the red nucleus in the midbrain and several thalamic nuclei which project into areas of the cerebral cortex that control limb movement.^[3]^[2]

References

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

↑ Carpenter, M. (1991). Core Text of Neuroanatomy. Williams & Wilkins. ISBN 978-0683014570.
1 2 Kandel, ER.; Schwartz, JH.; Jessel, TM. (2000). Principles of Neural Science (4th ed.). McGraw-Hill Medical. p. 843. ISBN 978-0838577011.
↑ Subramony, SH.; Dürr, A. (2011). Ataxic Disorders, Volume 103: Handbook of Clinical Neurology (1st ed.). Elsevier. p. 26. ISBN 978-0444518927.

External links

Anatomy of the cerebellum

Surface

Lobes	Anterior lobe Posterior lobe Horizontal fissure Flocculonodular lobe Flocculus Nodule Primary fissure

Medial/lateral	Vermis: anterior Central lobule Culmen Lingula posterior Folium Tuber Uvula Vallecula of cerebellum Hemisphere: anterior Alar central lobule posterior Biventer lobule Cerebellar tonsil

Grey matter

Deep cerebellar nuclei	Dentate interposed Emboliform Globose Fastigial

Cerebellar cortex	Molecular layer Stellate cell Basket cell Purkinje cell layer Purkinje cell Bergmann glia cell = Golgi epithelial cell Granule cell layer Golgi cell Granule cell Unipolar brush cell Fibers: Mossy fibers Climbing fiber Parallel fiber

White matter

Internal	Arbor vitae

Peduncles	Inferior (medulla): Dorsal spinocerebellar tract Olivocerebellar tract Cuneocerebellar tract Juxtarestiform body (Vestibulocerebellar tract) Trigeminocerebellar fibers Middle (pons): Pontocerebellar fibers Superior (midbrain): Ventral spinocerebellar tract Dentatothalamic tract

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