MeSH Browser

MeSH Heading: Area Postrema
Tree Number(s): A06.688.178.500; A08.186.211.132.810.591.500.286; A08.713.049.500
Unique ID: D031608
RDF Unique Identifier: http://id.nlm.nih.gov/mesh/D031608
Scope Note: 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.
Entry Term(s): Chemoreceptor Trigger Zone
Previous Indexing: Cerebral Ventricles (1965-2001); Fourth Ventricle (2000-2002); Medulla Oblongata (1966-2002)
Public MeSH Note: 2003
History Note: 2003
Date Established: 2003/01/01
Date of Entry: 2002/07/02
Revision Date: 2015/06/22

Allowable Qualifiers: abnormalities (AB)

anatomy & histology (AH)

blood supply (BS)

chemistry (CH)

cytology (CY)

diagnostic imaging (DG)

drug effects (DE)

embryology (EM)

enzymology (EN)

growth & development (GD)

immunology (IM)

injuries (IN)

metabolism (ME)

microbiology (MI)

parasitology (PS)

pathology (PA)

physiology (PH)

physiopathology (PP)

radiation effects (RE)

surgery (SU)

transplantation (TR)

ultrastructure (UL)

virology (VI)

Area Postrema MeSH Descriptor Data 2025