sheath
131Outer root sheath — The outer root sheath of the hair follicle encloses the inner root sheath and hair shaft.[1] It is continuous with the basal layer of the interfollicular epidermis (skin). References ^ James, William; Berger, Timothy; Elston, Dirk (2005) Andrews… …
132medullary sheath — noun a layer of myelin encasing (and insulating) the axons of medullated nerve fibers • Syn: ↑myelin sheath • Hypernyms: ↑sheath, ↑case • Part Holonyms: ↑medullated nerve fiber, ↑ …
