| zoloft | <drug> A common prescription drug used to treat depression. It is classed as a selective serotonin reuptake inhibitor, or SSRI, which functionally means that it increases the levels of serotonin in the body. This drug, as is the case with other SSRIs, can be dangerous if they are mixed with other drugs such as other antidepressants, illicit drugs (LSD, cocaine, methamphetamine), some antihistamines (Seldane, Histmanal), some antibiotics, and calcium channel blockers. Side effects include lethargy, confusion, flushing, sweating and muscle spasms. Overdose can cause damage to red blood cells, breathing problems and kidney damage. (09 Oct 1997) |
|---|---|
| zolpidem | A sedative/hypnotic drug useful for treating anxiety and resembling benzodiazepines in its pharmacology but differing somewhat in chemical structure. Unlike benzodiazepines, zolpidem lacks prominent anticonvulsant properties, and less tolerance may develop with its use. (05 Mar 2000) |
| zomepirac sodium | Sodium 5-(p-chlorodoenzoyl)-1,4-dimethylpyrrole-2-acet ate dihydrate;an analgesic anti-inflammatory agent, no longer marketed. (05 Mar 2000) |
| zona | Origin: L, a girdle. See Zone. A zone or band; a layer. Zona pellucida. [NL. <biology> A radiately striated membrane situated next the yolk of an ovum, or separated from it by a very delicate membrane only. Source: Websters Dictionary (01 Mar 1998) |
| zona arcuata | The inner third of the basilar membrane of the cochlear duct extending from the tympanic lip of the osseous spiral lamina to the outer pillar cell of the spiral organ (of Corti). Synonym: zona arcuata, zona tecta. (05 Mar 2000) |
| zona ciliaris | The outer, wider zone of the anterior surface of the iris, separated from the pupillary zone by the collarette. Synonym: zona ciliaris. (05 Mar 2000) |
| zona corona | An irregularly disposed collection of visible veins seen in the skin of people usually of or past middle age; it has no specific connection with any deep structure, such as the diaphragm, and no necessary connection with underlying visceral disease. Synonym: zona corona. (05 Mar 2000) |
| zona dermatica | A ridge of thickened skin surrounding the protrusion in spina bifida. (05 Mar 2000) |
| zona epithelioserosa | The membranous ring, within the zona dermatica, surrounding the protrusion in spina bifida. (05 Mar 2000) |
| zona facialis | Herpes zoster involving the face. (05 Mar 2000) |
| zona fasciculata | The wide middle zone of the adrenal cortex. This zone consists of large lipid-laden cells radially arranged in parallel cords. It converts pregnenolone to cortisol by a series of enzymatically regulated steps. A small amount of corticosterone is formed as a by-product of cortisol synthesis. (12 Dec 1998) |
| zona glomerulosa | The narrow subcapsular outer zone of the adrenal cortex. This zone consists of granular cells which stain deeply and are arranged in rounded groups. It converts pregnenolone to aldosterone by a series of enzymatically regulated steps. (12 Dec 1998) |
| zona haemorrhoidalis | The part of the anal canal that contains the rectal venous plexus. Synonym: annulus haemorrhoidalis, zona haemorrhoidalis. (05 Mar 2000) |
| zona ignea | <virology> A reactivation of the same Herpes virus that is responsible for chicken pox. This results in a painful blistery red rash that is confined to one side of the body. The zoster rash affects one nerve distribution or dermatome. Facial rash can lead to optic nerve involvement with resultant blindness. Synonym: shingles. (06 Mar 1998) |
| zona incerta | A flat, obliquely disposed plate of gray matter in the subthalamic region situated between the thalamic fasciculus (tegmental field H1 of Forel) and the lenticular fasciculus (tegmental field H2). Medially, cells of this nucleus are adjacent to the prerubral area (tegmental field H) and, laterally, they are continuous with the reticular nucleus of the thalamus. Z. I. Is a derivative of the ventral thalamus; it receives afferents from the precentral motor cortex and the cerebellum. (05 Mar 2000) |