sheath


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Related to sheath: cable sheath, carotid sheath

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 ?
Patients with a malignant peripheral nerve sheath tumor have a poor prognosis, as reported 5-year survival rates range from 50 to 65%).
The construction of 2YSLCY-JB includes fine wire strands of plain copper wire, polyethylene based insulation and colour coded cores, with a transparent PVC-based outer sheath.
indicate that the follicle-end bulb dermal sheath is among a restricted group of immunoprivileged tissues that can be transplanted to foreign sites without being rejected," the research team wrote.
An abdominal ultrasound scan demonstrated a rectus sheath haematoma measuring 1 x 2.
Calcein fluorescence was observed as a thin (6-12 [micro]m) band surrounding a central core of Texas Red fluorescence, indicating that the sheath surrounding the axons was predominantly labeled by calcein, and the axoplasm by Texas Red.
Vasectomy; no-scalpel vasectomy; vas deferens occlusion; cautery; sheath interruption.
Such studies at NYU have demonstrated that at the interruptions in the myelin sheath called the nodes of Ranvier, the nerve fiber membrane has high concentrations of protein molecules corresponding to the sodium channels essential for the conduction of nerve impulses that jump from node to node.
The sheath has been approved for use in procedures that involve the delivery of catheters and other therapeutic devices into the cardiovascular system, including transseptal access.
We elected to perform the surgery under a bilateral rectus sheath block with judicious sedation in an effort to minimise haemodynamic instability.
Centerless ground sheath provides diameter tolerances of [+ or -] 0.