sheath of Schwann /-ˈʃwɑn/ 名詞
Sheath n.
1. A case for the reception of a sword, hunting knife, or other long and slender instrument; a scabbard.
The dead knight's sword out of his sheath he drew. --Spenser.
2. Any sheathlike covering, organ, or part. Specifically: (a) Bot. The base of a leaf when sheathing or investing a stem or branch, as in grasses. (b) Zool. One of the elytra of an insect.
Medullary sheath. Anat. See under Medullary.
Primitive sheath. Anat. See Neurilemma.
Sheath knife, a knife with a fixed blade, carried in a sheath.
Sheath of Schwann. Anat. See Schwann's sheath.
◄ ►