chemoreceptor trigger zone


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chemoreceptor trigger zone

The area of the medulla oblongata that communicates with the vomiting centre, which is located in the floor of the 4th ventricle and receives vagal afferents or stimulated directly by apomorphine, cardiac glycosides, ergot compounds, chemotherapeutics, staphylococcal enterotoxin, salicylates, nicotine and other circulating chemicals. In contrast to the adjacent but distinct vomiting centre, the CTZ does not respond to electrical stimulation.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

chemoreceptor trigger zone

Area postrema Neuroanatomy The neural center for emesis, located in the floor of the 4th ventricle, which receives vagal afferents or stimulated directly by apomorphine, cardiac glycosides, ergot compounds, chemotherapeutics, staphylococcal enterotoxin, salicylate and nicotine and other circulating chemicals; in contrast to the adjacent but distinct vomiting center, the CTZ does not respond to electrical stimulation
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

chemoreceptor trigger zone

Abbreviation: CTZ
A zone in the medulla that is sensitive to certain chemical stimuli. Stimulation of this zone may produce nausea.
See also: zone
Medical Dictionary, © 2009 Farlex and Partners