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Area Postrema

MESHD031608

A small, rounded eminence on each side of the FOURTH VENTRICLE, which receives nerve fibers from the SOLITARY NUCLEUS; SPINAL CORD; and adjacent areas of the MEDULLA OBLONGATA. The area postrema lies outside the BLOOD-BRAIN BARRIER and its functions include acting as an emetic chemoreceptor.

Synonyms

  • Area Postremas
  • Postrema, Area
  • Chemoreceptor Trigger Zone
  • Chemoreceptor Trigger Zones
  • Trigger Zone, Chemoreceptor
  • Trigger Zones, Chemoreceptor
  • Zone, Chemoreceptor Trigger
  • Zones, Chemoreceptor Trigger

Source last updated 2026-05-24T15:25:20.490Z