| vagolytic | Having an effect resembling that produced by interruption of impulses transmitted by the vagus nerve, parasympatholytic. Origin: Gr. Lysis = dissolution (18 Nov 1997) |
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| vagomimetic | Mimicking the action of the efferent fibres of the vagus nerve. (05 Mar 2000) |
| vagotomy | <radiology> Effects of bilateral vagotomy (cholinergic denervation): decreased motility of stomach and intestine, decreased gastric secretions, decreased tone of gallbladder and bile ducts, increased tone of sphincters (Oddi and lower oesophageal sphincter) (12 Dec 1998) |
| vagotomy, proximal gastric | Vagal denervation of that part of the stomach lined with acid secreting mucosa. Since the procedure leaves the vagal branches to the antrum and pylorus intact, it circumvents gastric drainage required with truncal vagotomy techniques. (12 Dec 1998) |
| vagotomy, truncal | Bilateral dissection of the abdominal branches of the vagus nerve. It is used frequently in the surgical management of duodenal and gastric ulcers, as well as in physiologic studies of gastrointestinal secretion and motility. (12 Dec 1998) |
| vagotonia | Hyperexcitability of the vagus nerve, a condition in which the vagus nerve dominates in the general functioning of the body organs. It is marked by vasomotor instability, constipation, sweating and involuntary motor spasms with pain. (18 Nov 1997) |
| vagotonic | Relating to or marked by vagotonia. (05 Mar 2000) |
| vagotropic | Attracted by, hence acting upon, the vagus nerve. Origin: vago-+ G. Tropos, turning (05 Mar 2000) |
| vagovagal | Pertaining to a process that utilises both afferent and efferent vagal fibres. (05 Mar 2000) |
| vagovagal reflex | Bradycardia with arterial hypotension, often with supraventricular arrhythmias; ascribed to stimulation, especially mechanical, of afferent vagal pathways in the abdomen, thorax, or airway, the efferent arc being vagal cardioinhibitory fibres. (05 Mar 2000) |
| vagrant's disease | Excoriations and melanoderma caused by scratching the bites of the body louse, Pediculus corporis. Synonym: Greenhow's disease, vagabond's disease, vagrant's disease. Racial melanoderma, the normally dark skin of blacks and certain other races. Senile melanoderma, cutaneous pigmentation occurring in the aged. Synonym: melasma universale. (05 Mar 2000) |
| vagus | <anatomy> Wandering; applied especially to the pneumogastric nerve. The vagus, ore pneumogastric, nerve. Origin: L, wandering. Source: Websters Dictionary (01 Mar 1998) |
| vagus area | A portion of the floor of the fourth ventricle overlying the vagoglossopharyngeal nuclei. (05 Mar 2000) |
| vagus nerve | <anatomy, nerve> The vagus nerve enervates the gut (gastrointestinal tract), heart and larynx. Lesions of the tenth nerve usually result in a horse voice, but may also cause difficulty in swallowing or talking. Synonym: cranial nerve X. (27 Sep 1997) |
| vagus pulse | A slow pulse due to the inhibitory action of the vagus nerve on the heart. (05 Mar 2000) |