sheath

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Related to carotid sheath: recurrent laryngeal nerve

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.
References in periodicals archive ?
Also confirmed was the position of scalenus anterior between the carotid sheath and brachial plexus/ scalenus medius seen in our dissection.
All imaging protocols should contain anterior planar images from the ears through the inferior border of the heart to screen for ectopic adenomas, which can be located anywhere from the carotid sheath to the inferior cardiac border.
Then it descends through the neck within the carotid sheath.
1) CT revealed a peripherally enhancing, ovoid tumor posterior to the carotid sheath structures.
In the carotid artery type, symptoms occur when the elongated styloid process stimulates the sympathetic nerves in the carotid sheath.
When it occurs, the radiologist should examine the neck for the presence of a lesion along the course of the vagus nerve (cranial nerve X), which passes through the pars nervosa of the jugular foramen and along the carotid sheath.
We present a case of isolated extranodal Rosai-Dorfman disease involving the carotid sheath, without the typical massive adenopathy.