Posterolateral tract

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Posterolateral tract

The Posterolateral tract (pronunciation: pos·te·ro·lat·er·al tract), also known as Lissauer's tract, is a bundle of sensory nerve fibers located in the spinal cord.

Etymology

The term "posterolateral" is derived from the Latin words "posterus" meaning "coming after", "latus" meaning "side", and "tractus" meaning "drawn out". The tract is named after German neurologist Heinrich Lissauer, who first described it in 1885.

Function

The Posterolateral tract carries pain and temperature sensations from the body to the brain. It is part of the anterolateral system, which is responsible for transmitting these types of sensory information.

Related Terms

  • Anterolateral system: A major sensory pathway of the central nervous system that conveys pain, temperature, and crude touch sensations to the brain.
  • Spinal cord: The main pathway for information connecting the brain and peripheral nervous system.
  • Sensory nerve fibers: Nerve fibers responsible for transmitting sensory information from the body to the brain.
  • Pain: An unpleasant sensory and emotional experience associated with actual or potential tissue damage.
  • Temperature: A measure of the warmth or coldness of an object or substance with reference to a standard value.

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