| dilator | 1. One who, or that which, widens or expands. 2. <anatomy> A muscle that dilates any part. 3. <medicine> An instrument for expanding a part; as, a urethral dilator. See: Dilate. Source: Websters Dictionary (01 Mar 1998) |
|---|---|
| dilator iridis | <anatomy> The radial muscular fibres extending from the sphincter pupillae to the ciliary margin; some anatomists regard them as elastic, not muscular, in humans. Synonym: musculus dilator pupillae, dilator iridis, dilator of pupil, musculus dilator iridis. (05 Mar 2000) |
| dilator muscle | <anatomy> A muscle which opens an orifice or dilates the lumen of an organ; it is the dilating or opening component of a pylorus (the other component is the sphincter muscle). Synonym: musculus dilatator, musculus dilator. (05 Mar 2000) |
| dilator muscle of ileocaecal sphincter | The longitudinal muscular fibres that open the ileal orifice at the level of the caecocolic junction. Synonym: musculus dilator pylori ilealis. (05 Mar 2000) |
| dilator muscle of pylorus | The longitudinal muscular fibres that open the gastroduodenal junction. Synonym: musculus dilator pylori gastroduodenalis. (05 Mar 2000) |
| dilator of pupil | <anatomy> The radial muscular fibres extending from the sphincter pupillae to the ciliary margin; some anatomists regard them as elastic, not muscular, in humans. Synonym: musculus dilator pupillae, dilator iridis, dilator of pupil, musculus dilator iridis. (05 Mar 2000) |
| dilator pupillae muscle | <anatomy> The radial muscular fibres extending from the sphincter pupillae to the ciliary margin; some anatomists regard them as elastic, not muscular, in humans. Synonym: musculus dilator pupillae, dilator iridis, dilator of pupil, musculus dilator iridis. (05 Mar 2000) |
| dilator tubae | <anatomy> Tensor muscle of soft palate, musculus tensor palati; musculus palatosalpingeus; musculus sphenosalpingostaphylinus; dilator tubae; origin, scaphoid fossa of sphenoid, cartilaginous and membranous part of auditory (eustachian) tube and spine of sphenoid; insertion, posterior border of hard palate and aponeurosis of soft palate; action, tenses the soft palate; contributes to opening of auditory tube; nerve supply, branches of trigeminal nerve through the otic ganglion. Synonym: musculus tensor veli palatini, dilator tubae, musculus palatosalpingeus, musculus sphenosalpingostaphylinus, musculus tensor palati, palatosalpingeus, tensor muscle of soft palate. (05 Mar 2000) |
| Goodell's dilator | An obsolete term for a uterine dilator used for dilating the cervix. (05 Mar 2000) |
|---|---|
| Chevalier-Jackson dilator | An oesophageal dilator that passes through a rigid endoscope. (05 Mar 2000) |
| Walther's dilator | A gently curved instrument that tapers to an increased diameter, used to dilate the female urethra. (05 Mar 2000) |
| Plummer's dilator | An instrument for dilating the lower end of the oesophagus in cardiospasm; it consists of a rubber tube with a perforated metal tip, and a dilatable elongated balloon near its lower end; in difficult cases the tube is threaded along a guiding thread swallowed by the patient. (05 Mar 2000) |
| musculus dilator | <anatomy> A muscle which opens an orifice or dilates the lumen of an organ; it is the dilating or opening component of a pylorus (the other component is the sphincter muscle). Synonym: musculus dilatator, musculus dilator. (05 Mar 2000) |
| musculus dilator iridis | <anatomy> The radial muscular fibres extending from the sphincter pupillae to the ciliary margin; some anatomists regard them as elastic, not muscular, in humans. Synonym: musculus dilator pupillae, dilator iridis, dilator of pupil, musculus dilator iridis. (05 Mar 2000) |
| musculus dilator naris | See: nasalis muscle. (05 Mar 2000) |
| musculus dilator pupillae | <anatomy> The radial muscular fibres extending from the sphincter pupillae to the ciliary margin; some anatomists regard them as elastic, not muscular, in humans. Synonym: musculus dilator pupillae, dilator iridis, dilator of pupil, musculus dilator iridis. (05 Mar 2000) |
| musculus dilator pylori gastroduodenalis | The longitudinal muscular fibres that open the gastroduodenal junction. Synonym: musculus dilator pylori gastroduodenalis. (05 Mar 2000) |
| musculus dilator pylori ilealis | The longitudinal muscular fibres that open the ileal orifice at the level of the caecocolic junction. Synonym: musculus dilator pylori ilealis. (05 Mar 2000) |
| musculus dilator tubae | That portion of musculus tensor veli palatini that attaches to the mucous membrane of the auditory tube; formerly described as a separate muscle. (05 Mar 2000) |
| hydrostatic dilator | An instrument for dilating oesophageal strictures; fluid pressure is delivered into a flexible area of the instrument placed in the stricture to establish a uniform dilating pressure. (05 Mar 2000) |
| Kollmann's dilator | A metallic expandable instrument used to dilate urethral strictures. (05 Mar 2000) |