Deep cerebellar nuclei
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| Brain: Deep cerebellar nuclei | ||
|---|---|---|
| Sagittal section through right cerebellar hemisphere. The right olive has also been cut sagitally. (Nucleus dentatus labeled at center top.) | ||
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| Microcircuitry of the cerebellum. Excitatory synapses are denoted by (+) and inhibitory synapses by (-). MF: Mossy fiber. DCN: Deep cerebellar nuclei. IO: Inferior olive. CF: Climbing fiber. GC: Granule cell. PF: Parallel fiber. PC: Purkinje cell. GgC: Golgi cell. SC: Stellate cell. BC: Basket cell. | ||
| Latin | nuclei cerebelli | |
| Gray's | subject #187 796 | |
| NeuroNames | hier-679 | |
| Dorlands/Elsevier | n_11/12580684 | |
The deep cerebellar nuclei are four in number on either side: one is of large size, and is known as the nucleus dentatus; the other three, much smaller, are situated near the middle of the cerebellum, and are known as the nucleus emboliformis, nucleus globosus, and nucleus fastigii.
- The nucleus dentatus ("dentate nucleus") is situated a little to the medial side of the center of the stem of the white substance of the hemisphere. It consists of an irregularly folded lamina, of a grayish-yellow color, containing white fibers, and presenting on its antero-medial aspect an opening, the hilus, from which most of the fibers of the superior peduncle emerge.
- The nucleus emboliformis ("emboliform nucleus") lies immediately to the medial side of the nucleus dentatus, and partly covering its hilus.
- The nucleus globosus ("globose nucleus") is an elongated mass, directed antero-posteriorly, and placed medial to preceding.
- The nucleus fastigii ("fastigial nucleus") is somewhat larger than the other two, and is situated close to the middle line at the anterior end of the superior vermis, and immediately over the roof of the fourth ventricle, from which it is separated by a thin layer of white substance.
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