| intermediate part of vestibular bulb | A narrow median band that connects the two masses of erectile tissue (the bulbus vestibuli) on either side of the vaginal orifice. Synonym: pars intermedia commissura bulborum, commissura bulborum, intermediate part of vestibular bulb, pars intermedia bulborum. (05 Mar 2000) |
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| olfactory bulb | Ovoid body resting on the cribriform plate of the ethmoid bone where the olfactory nerve terminates. The olfactory bulb contains several types of nerve cells including the mitral cells, on whose dendrites the olfactory nerve synapses, forming the olfactory glomeruli. The accessory olfactory bulb, which receives the projection from the vomeronasal organ via the vomeronasal nerve, is also included here. (12 Dec 1998) |
| onion bulb neuropathy | Designation for any of several demyelinating polyneuropathies in which the nerves are enlarged, due to onion bulb formation-whorls of overlapping Schwann cell processes encircling bare medullated axons, e.g., progressive hypertrophic polyneuropathy. See: hypertrophic interstitial neuropathy. (05 Mar 2000) |
| taste bulb | One of a number of flask-shaped cell nests located in the epithelium of vallate, fungiform, and foliate papillae of the tongue and also in the soft palate, epiglottis, and posterior wall of the pharynx; it consists of sustentacular, gustatory, and basal cells between which the intragemmal sensory nerve fibres terminate. Synonym: caliculus gustatorius, gustatory bud, Schwalbe's corpuscle, taste bulb, taste corpuscle. (05 Mar 2000) |
| end bulb | One of the oval or rounded bodies in which the sensory nerve fibres terminate in mucous membrane. (05 Mar 2000) |
| jugular bulb | <anatomy, vein> One of two dilated parts of the internal jugular vein: the superior bulb (Heister's diverticulum) is a dilation at the beginning of the internal jugular vein in the jugular fossa of the temporal bone; the inferior bulb is a dilat ed portion of the vein just before it reaches the brachiocephalic vein. Synonym: jugular bulb, bulbus venae jugularis. (05 Mar 2000) |
| vaginal | 1. Of the nature of a sheath, ensheathing. 2. <anatomy> Pertaining to the vagina. 3. Pertaining to the tunica vaginalis testis. (18 Nov 1997) |
| vaginal artery | <anatomy, artery> Origin, internal iliac; distribution, vagina, base of bladder, rectum; anastomoses, uterine, internal pudendal. Synonym: arteria vaginalis. (05 Mar 2000) |
| vaginal atresia | Congenital or acquired imperforation or occlusion of the vagina, or adhesion of the walls of the vagina. Synonym: ankylocolpos, colpatresia. (05 Mar 2000) |
| vaginal birth after cesarean | Delivery of an infant through the vagina in a female who has had a prior cesarean section. (12 Dec 1998) |
| vaginal birth after cesarian section | It was once the rule that after a c-section, the next delivery also had to be by c-section. Now vaginal delivery after cesarian section (vbac) is frequently feasible. See: vbac. (12 Dec 1998) |
| vaginal columns | Two slight longitudinal ridges, anterior and posterior, in the vaginal mucous membrane, each marked by a number of transverse mucosal folds. Synonym: columnae rugarum, vaginal columns. (05 Mar 2000) |
| vaginal cornification test | A test for oestrogenic activity, in which the appearance of cornified epithelial cells in a vaginal smear of a test animal is an indication of the action of an oestrogen. (05 Mar 2000) |
| vaginal creams, foams and jellies | Medicated dosage forms for topical application in the vagina. A cream is a semisolid emulsion containing suspended or dissolved medication; a foam is a dispersion of a gas in a medicated liquid resulting in a light, frothy mass; a jelly is a colloidal semisolid mass of a water soluble medicated material, usually translucent. The concept includes vaginal creams, foams, and jellies in general or for which there is no other specific heading. (12 Dec 1998) |
| vaginal cyst | A closed sac on or under the vaginal mucosa that contains fluid or semi-solid material. These may occur secondary to trauma. Treatment may include surgical excision. (27 Sep 1997) |