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sheath

sheath

6 6.0
A protective layer that surrounds and supports an animal or plant part
  • noun
  • /ʃiːθ/
  • Specialized
translation icon : vaina
  • The nerve is ordinarily surrounded by a bony sheath called the fallopian canal.
  • nerve sheath
  • peripheral nerve sheath
  • myelin sheath

The way that myelin sheaths wrap around the neurology, neurology.

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Examples

  • We also had to remove a good amount of the sheath tissue around the sciatic nerve.

  • The protective sheath surrounding the plant's stem helps it retain moisture.

  • It's like nature, all animals have sheaths.

  • And I notice there's a very slight break in the sheath here as well.

  • Your own immune system is attacking the nerve sheath on the axons in your brain.

  • Surrounding the Axon is a myelin sheath, which is actually just insulation.

  • Oligodendrocytes form a sheath around nerve fibers to improve signal transmission.

  • The outer sheath of the muscle fibers provides structural support and protection.

Synonyms

case
vssheath
1.0

A box or container for holding and carrying things like bottles

is usually for natural enclosing structures around organs or parts
myelin sheath
vssheath
  • Specialized
1 7.2

A fatty layer around nerve fibers that helps signals travel fast

is a general enclosing structure without the specific insulating role
theca
vssheath
  • Specialized
1 9.9

A protective case that covers parts of plants and animals, like an insect pupa

is a general term for any enclosing structure around organs
tunic
vssheath
  • Specialized
8.4

A layer of tissue that covers an organ or body part

is broader and covers all enclosing structures rather than only membranes

Compounds

myelin sheath
  • Specialized
1 7.2

A fatty layer around nerve fibers that helps signals travel fast

1 5.1

A knife with a fixed blade that you carry in a protective cover

medullary sheath
  • Specialized
8.9

A thin fatty layer that covers nerve fibers and helps signals travel faster

sheath pile
  • Specialized
9.9

A row of long metal or concrete posts placed side by side to hold back soil and water

How Protective

shell
296 1.0
capsule
  • Specialized
5 6.3
sheath
  • Specialized
6 6.0
membrane
  • Specialized
74 4.5
film
191 3.2

Surface Forms

sheath singular
sheaths plural

Etymology

Sheath is also used for a thin 'cover' around a plant part or an organ, using the same idea as the blade case. So a leaf or nerve sheath is a layer that surrounds and protects the part inside.