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medullary sheath

medullary sheath The medullary sheath is the covering that may form around a nerve fibre’s axis cylinder after it leaves the nerve cell.

The medullary sheath is the covering that may form around a nerve fibre’s axis cylinder after it leaves the nerve cell. In this account, it is one of the nerve’s sheaths and serves mainly to insulate and protect the fibre.

Also see

Sources

Drafting source: Baldwin Dictionary of Philosophy and Psychology, 1901. 1901 New York Macmillan original; archive index checked 2026-10-18. “Nervous System” (Nervous System).
public-domain-US · Definition uses new wording; original source retains its stated licence. · Source snapshot SHA-256: 0356d8fb8df8ac9c4e211db74935ef6a65cd83ce747d4a508551c992e0112d38

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PsychTerms (psychterms.org), CC BY 4.0, version 1. “medullary sheath.” Development preview.

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