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sheath
(redirected from synovial sheath)

   Also found in: Dictionary/thesaurus, Medical, Legal, Wikipedia 0.01 sec.
sheath
1. Biology an enclosing or protective structure, such as a leaf base encasing the stem of a plant
2. the protective covering on an electric cable

sheath [shēth]
(electricity)
A protective outside covering on a cable.
(electronics)
A space charge formed by ions near an electrode in a gas tube.
(electromagnetism)
The metal wall of a waveguide.
(science and technology)
A protective case or cover.

sheath
In reinforced concrete, an enclosure which encases posttensioned tendons to prevent their being bonded during the placement of concrete.


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The tendon''s ability to glide is facilitated by the presence of a thin paratenon sheath, which is composed of both a visceral layer and parietal layer, rather than simply a true synovial sheath.
Each tendon is surrounded by a thick, fluid filled sac called a synovial sheath, which swells with extra fluid to protect the tendon.
The tendons normally glide very smoothly through the synovial sheath.
 
 
 
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