| Term: | valvula cerebelli myelin sheath |
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| Note: | This page represents a term created by the combination ("post-composition") of two ontology terms. For more information on the individual terms, click the hyperlinked name. |
| Name: | valvula cerebelli |
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| Synonyms: | valvula, valvula cerebellum |
| Definition: | Brain structure which is caudally attached to the rostral medulla oblongata and extends into the tectal ventricle. The valvula cerebelli consists of a granular and a molecular layer along with aggregations of large Purkinje and eurydendroid cells and is uniquely present in ray-finned fishes. From Neuroanatomy of the Zebrafish Brain. |
| Ontology: | Anatomy Ontology [ZFA:0000603] |
| Name: | myelin sheath |
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| Synonyms: | astrocyte sheath, oligodendrocyte myelin sheath, Schwann cell myelin sheath |
| Definition: | An electrically insulating fatty layer that surrounds the axons of many neurons. It is an outgrowth of glial cells: Schwann cells supply the myelin for peripheral neurons while oligodendrocytes supply it to those of the central nervous system. |
| Ontology: | GO: Cellular Component [GO:0043209] QuickGO AmiGO |