You know what it looks like… but what is it called?
TAKE THE QUIZ“sheath of”
The following 3 entries include the term sheath of.
sheath of Henle
nounsheath of Hertwig
noun: a two-layered epithelial wall that covers the developing root of a tooth, is derived from cells of the enamel organ, and later breaks up during the process of cement deposition
sheath of Schwann
noun-
- Before we went to her house, Hannah told us her aunt was a flibbertigibbet.


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Merriam-Webster unabridged