Sheath

Sheath, pronounced /ʃiːθ/, may refer to:

Biology

• Carotid sheath, a condensation of the deep cervical fascia enveloping multiple vital neurovascular structures of the neck
• Leaf sheath, a structure, typically at the base that fully or partially clasps the stem above the node, where the leaf is attached
• Myelin sheath, an insulating layer over the axon of a neuron
• Preputial sheath, a non-human mammal prepuce
  • Clitoral sheath a non-human mammal clitoral hood
  • Penile sheath, a non-human mammal foreskin
• Rectus sheath, a tough fibrous compartment formed by the aponeuroses of the transverse abdominal muscle and the internal and external oblique muscles
• Root sheath (disambiguation)
• Tendon sheath, a layer of synovial membrane around a tendon

Objects

• Scabbard, a sheath for holding a sword, dagger, knife, or similar edged weapons
• The outer covering of an electrical cable
• Introducer sheath, an intravascular medical device
• Koteka, a penis sheath traditionally worn by native male inhabitants of some ethnic groups in New Guinea
• Sheath dress, a fitted, straight cut dress, often nipped at the waistline with no waist seam

Other uses

• Debye sheath, a layer in a plasma which has a greater density of positive ions
• Heliosheath, the region of the heliosphere beyond the termination shock
• Kosha, a covering of the Atman according to Vedantic philosophy
• Sheath (album), a 2003 album by LFO

See also

• Sheaf (disambiguation)
• Sheathing (disambiguation)
• Sheave, a type of pulley