| 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) |
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| 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) |
| Kollmann's dilator | A metallic expandable instrument used to dilate urethral strictures. (05 Mar 2000) |