| NGT | nasogastric tube; nominal group technique; normal glucose tolerance |
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| NOBT | nonoperative biopsy technique |
| OMT | object modeling technique; ocular microtremor; O-methyltransferase; ophthalmic medical technician or... |
| ORT | object relations technique; operating room technician; oral rehydration therapy |
| pAg | protein A-gold [technique] |
| canal of Hovius | An anastomotic circle between the anterior twigs of the venae vorticosae in the eyes of some animals, but not in normal human eyes. (05 Mar 2000) |
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| canal of Nuck | A peritoneal diverticulum in the embryonic lower anterior abdominal wall that traverses the inguinal canal; in the male it forms the tunica vaginalis testis and normally loses its connection with the peritoneal cavity; a persistent processus vaginalis in the female is known as the canal of Nuck. Synonym: Nuck's diverticulum, processus vaginalis peritonei, vaginal process of peritoneum, vaginal process of testis. (05 Mar 2000) |
| palatovaginal canal | On the undersurface of the vaginal process of the sphenoid bone, a furrow that is converted into a canal by the sphenoidal process of the palatine bone; it transmits the pharyngeal branch of the maxillary artery and the pharyngeal nerve from the pterygopalatine ganglion. Synonym: canalis palatovaginalis, palatovaginal canal. (05 Mar 2000) |
| van Horne's canal | <anatomy> The major efferent lymph duct into which lymph from most of the peripheral lymph nodes drains. Recirculating lymphocytes that have left the circulation in the lymph node return to the blood through the thoracic duct. (18 Nov 1997) |
| Gartner's canal | A rudimentary vestige of the mesonephric duct in the female into which the tubules of the epoophoron open; it is located in the broad ligament of the uterus, parallel with the lateral part of the uterine tube, and in the lateral walls of the cervix and vagina. Synonym: ductus epoophori longitudinalis, ductus deferens vestigialis, Gartner's canal, Gartner's duct. (05 Mar 2000) |
| gastric canal | Furrow formed temporarily between longitudinal rugae of the gastric mucosa along the lesser curvature during swallowing; observed radiographically and endoscopically, it is formed because of the firm attachment of the gastric mucosa to the muscular layer, which is devoid of an oblique layer at this site; said to form a passageway favoured by saliva and small quantities of masticated food and other fluids as they flow from cardia to gastroduodenal junction. Synonym: canalis gastricus, canalis gastrici, magenstrasse. (05 Mar 2000) |
| vein of pterygoid canal | A vein accompanying the nerve and artery through the pterygoid canal and emptying into the pharyngeal venous plexus. Synonym: vena canalis pterygoidei, vidian vein. (05 Mar 2000) |
| Velpeau's canal | A passage in the lower anterior abdominal wall which in the male allows passage of the spermatic cord and in the female contains the round ligament. Because of the weakness it creates in the abdominal wall, it is the most frequent site for a hernia. (12 Dec 1998) |
| mandibular canal | The canal within the mandible that transmits the inferior alveolar nerve and vessels. Its posterior opening is the mandibular foramen. Synonym: canalis mandibulae, inferior dental canal. (05 Mar 2000) |
| venous plexus of hypoglossal canal | A small venous network around the hypoglossal nerve, connecting with the occipital sinus, inferior petrosal sinus, and internal jugular vein. Synonym: plexus venosus canalis hypoglossi, circellus venosus hypoglossi, rete canalis hypoglossi. (05 Mar 2000) |
| geniculum of facial canal | The bend in the facial canal linking the medial and lateral crura of the horizontal port of the canal and corresponding to the location of the geniculate ganglion of the facial nerve. Synonym: geniculum canalis facialis. (05 Mar 2000) |
| genu of facial canal | A sharp bend in the facial canal where the geniculate ganglion is located. (05 Mar 2000) |
| marrow canal | The chamber of the dental pulp lying within the root portion of a tooth. Synonym: canalis radicis dentis, marrow canal, pulp canal. (05 Mar 2000) |
| vertebral canal | The canal that contains the spinal cord, spinal meninges, and related structures. It is formed by the vertebral foramina of successive vertebrae of the articulated vertebral column. Synonym: canalis vertebralis, spinal canal, tubus vertebralis. (05 Mar 2000) |
| carotid canal | A passage through the petrous part of the temporal bone from its inferior surface upward, medially, and forward to the apex where it opens into the foramen lacerum. It transmits the internal carotid artery and plexuses of veins and autonomic nerves. Synonym: canalis caroticus. (05 Mar 2000) |