| Term: | nervous system 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: | nervous system |
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| Synonyms: | |
| Definition: | A regulatory system of the body that consists of neurons and neuroglial cells. The nervous system is divided into two parts, the central nervous system (CNS) and the peripheral nervous system (PNS). |
| Ontology: | Anatomy Ontology [ZFA:0000396] |
| 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 |