CTZ


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CTZ

Chemoreceptor trigger zone, see there.

zone

(zon) [L. zona, fr. Gr. zone, a girdle],

z

1. An area or belt.
2. A lobe of an organ or a gland.

anal transition zone

Abbreviation: ATZ
The histologic junction between the anal squamous epithelium and the rectal columnar epithelium.

border zone

The partially damaged part of an organ that is found between tissue that is severely injured by an infarct and nearby tissue that is still well supplied with blood, oxygen, and nutrients.

cell-free zone

In dentistry, an area below the odontoblastic layer of the dental pulp that has relatively few cells.
Synonym: zone of Weil

cell-rich zone

The area of increased cell frequency between the cell-free zone and the central pulp of the tooth.

chemoreceptor trigger zone

Abbreviation: CTZ
A zone in the medulla that is sensitive to certain chemical stimuli. Stimulation of this zone may produce nausea.

ciliary zone

The peripheral annular sector of the anterior surface of the iris of the eye. The ciliary zone is separated from the inner, more narrow annulus, the pupillary zone, of the iris by a wavy boundary, the collarette. These regions are used in automated iris recognition technology.

cold zone

In a hazardous materials incident, an unexposed area where rescue personnel wait for assignments and the command post is located, which is safe from any potential contamination.

comfort zone

The range of temperature, humidity, and, when applicable, solar radiation and wind in which an individual doing work at a specified rate and in a certain specified garment is comfortable.

epileptogenic zone

Any area of the brain that after stimulation produces an epileptic seizure.

erogenous zone

An area of the body that may produce erotic sensations when stimulated. These areas include, but are not limited to, the breasts, lips, genital and anal regions, buttocks, and sometimes the special senses that cause sexual excitation, such as the sense of smell or taste.

H zone

H band.

hot zone

In a hazardous materials incident or biohazard laboratory, the area where the hazardous materials are located. This area cannot be entered without protective equipment, special permission, and specialized training.

hypnogenic zone

Any area of the body that, when pressed on, induces hypnosis.
Synonym: hypnogenic spot

Looser zones

See: Looser zones

lung zone

A hypothetical region of the lung defined by the relationship between the degree of alveolar ventilation and pulmonary blood flow (perfusion). Three lung zones have been identified: I, ventilation exceeds perfusion; II, ventilation and perfusion are equal; and III, perfusion exceeds ventilation. Zone I is found in the upper lung field, where gravity impedes perfusion, and zone III in the inferior portion of the lung, where gravity assists perfusion.

pellucid zone

Zona pellucida.

peripheral zone

Abbreviation: PZ
The lateral border of the prostate gland. Most prostate cancers begin here. Synonym: peripheral zone of the prostate

peripheral zone of the prostate

Peripheral zone.

pupillary zone

The innermost of two annular areas visible on the anterior surface of the iris.
See: ciliary zone

zone of stasis

The area of skin beneath the coagulated surface of a burn in which blood flow is diminished and tissue fluid collects. This region of a burn may become necrotic if it becomes infected or fails to receive adequate blood flow.

transition zone

1. Tissue that includes two or more cell types linking two distinct regions of an organ.
2.
Squamocolumnar junction.

transitional zone

The area of the lens of the eye where the epithelial capsule cells change into lens fibers.

trigger zone

Trigger point.

warm zone

In a hazardous materials incident, the area between the hot zone and the cold zone, where decontamination occurs. Only specialized personnel who are appropriately dressed are permitted in this location.

zone of Weil

Cell-free zone.

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
References in periodicals archive ?
Para la determinacion de la exactitud del metodo propuesto por el metodo de adicion estandar en la curva Di-Eudrin[R] + Inderal[R] + CTZ se demostro que las muestras no presentaron interferencia en el area de pico de HCTZ y CHP al ser enriquecidas con solucion de CTZ, es decir, que el metodo tiene capacidad de discriminacion suficiente con CV menor al 2 %, entre las determinaciones en presencia o ausencia de CTZ en la matriz.
Basados en todos los valores del estudio estadistico y en que la recuperacion de los analitos HCTZ y CHP en cada uno de los puntos ensayados en el estudio, se encuentran dentro del rango de aceptacion (96-104 %); y que de igual forma, la media de recuperacion para los dos analitos de interes, se ubica dentro del criterio de aceptacion (98-102 %) [20], se puede considerar que el metodo propuesto es exacto para la determinacion simultanea de HCTZ y CHP, con CTZ como impureza de sintesis, por la metodologia de adicion de estandar.
Las respuestas de las muestras de HCTZ y CHP inter-dia, muestran un CV menor a 2 % y para CTZ como impureza de sintesis un valor de CV menor a 3 %.
Pregnancy-induced nausea and vomiting (PINV): The CTZ has receptors for human chorionic gonadotrophin (hCG), the levels of which increase during early pregnancy and decrease as PINV resolves.
In what CTZ call "1985," for instance, the prices of most services were collected in September-October 1985, while prices of most clothing items were collected in December of 1984.
El uso de la pasta CTZ, en tratamientos pulpares, es una tecnica simple y facil de realizar, reduce el tiempo de trabajo y ha mostrado excelentes resultados clinicos, debido al efecto antimicrobiano de los elementos que la componen; ademas de promover una estabilizacion del proceso de resorcion radicular y de no interferir con la resorcion fisiologica del organo dental deciduo.
Utilizacao da pasta CTZ em dente deciduo com necrose pulpar-relato de caso.
The large interannual variability of the CTZs results in an environment that might not uniquely favor one biome over another.
Figure 13 shows the MAD 1-defined CTZs overlain on the decadal (1950-99) distribution of Alaskan forest fires.
9], y luego Chetty [10], reportan la determinacion simultanea de ambos farmacos, pero en ninguno de estos metodos se reporta la presencia de CTZ como impureza de sintesis, cuando se analiza el CHP simultaneamente con la HCTZ.
La aplicacion de un par ionico, como lo es el 1-heptano sulfonate de sodio (1-HSS), que actua como un anion "pesado" susceptible de aparearse con el grupo nitrogenado con carga positiva del CHP, tiene efectos favorables para la separacion de HCTZ y CTZ bajo la forma no ionizada de ambas moleculas (compuestos neutros).