Area Postrema
Synonyms
Area Postremas
Chemoreceptor Trigger Zone
Chemoreceptor Trigger Zones
Postrema, Area
Trigger Zone, Chemoreceptor
Trigger Zones, Chemoreceptor
Zone, Chemoreceptor Trigger
Zones, Chemoreceptor Trigger
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.