| SM | Master of Science; sadomasochism; self-monitoring; silicon microphysiometer; simple mastectomy; skim... |
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| SPM | shocks per minute; spermine; subhuman primate model; suspended particulate matter; synaptic plasma m... |
| SV | saphenous vein; sarcoma virus; satellite virus; selective vagotomy; semilunar valve; seminal vesicle... |
| SV2 | synaptic vesicle protein 2 |
| SVAT | synaptic vesicle amine transformer |
| cleft uvula | The uvula, the little V-shaped fleshy mass hanging from the back of the soft palate, is cleft. Cleft uvula is a common minor anomaly occurring in about 1% of whites and 10% of Native Americans. Persons with a cleft uvula should not have their adenoids removed because, without the adenoids, they cannot achieve proper closure between the soft palate and pharynx while speaking and develop hypernasal speech. Also called bifid uvula. (12 Dec 1998) |
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| pudendal cleft | The cleft between the labia majora. Synonym: rima pudendi, fissura pudendi, pudendal cleavage, pudendal slit, rima vulvae, urogenital cleft, vulvar slit. (05 Mar 2000) |
| hyobranchial cleft | The cleft caudal to the hyoid arch of the embryo. (05 Mar 2000) |
| hyomandibular cleft | <anatomy> The cleft between the hyoid and mandibular arches of the embryo; the external auditory meatus is developed from its dorsal portion. Synonym: first visceral cleft. (05 Mar 2000) |
| natal cleft | The sulcus between the buttocks (nates). Synonym: crena ani, anal cleft, crena clunium, gluteal cleft. (05 Mar 2000) |
| subdural cleft | Originally thought to be a narrow fluid-filled interval between the dural and arachnoid; now known to be an artificial space created by the separation of the arachnoid from the dura as the result of trauma or some ongoing pathologic process; in the healthy state, the arachnoid is attached to the dura and a naturally occurring subdural space is not present. Synonym: spatium subdurale, cavum subdurale, subdural cavity, subdural cleavage, subdural cleft. (05 Mar 2000) |
| oblique facial cleft | Congenital facial cleft from mouth to the inner canthus of the eye. Synonym: oblique facial cleft. Origin: prosopo-+ G. Schisis, fissure (05 Mar 2000) |
| two-cleft | <botany> Divided about half way from the border to the base into two segments; bifid. Source: Websters Dictionary (01 Mar 1998) |
| facial cleft | A cleft resulting from incomplete merging or fusion of embryonic processes normally uniting in the formation of the face, e.g., cleft lip or cleft palate. Synonym: prosopoanoschisis. (05 Mar 2000) |
| urogenital cleft | The cleft between the labia majora. Synonym: rima pudendi, fissura pudendi, pudendal cleavage, pudendal slit, rima vulvae, urogenital cleft, vulvar slit. (05 Mar 2000) |
| first visceral cleft | <anatomy> The cleft between the hyoid and mandibular arches of the embryo; the external auditory meatus is developed from its dorsal portion. Synonym: first visceral cleft. (05 Mar 2000) |
| Larrey's cleft | A muscular defect in the diaphragm between the costal and the sternal portions. Synonym: Larrey's cleft, sternocostal triangle. (05 Mar 2000) |
| alpha substance | A filamentous plasmatic material, beaded with granules, demonstrable by means of vital staining in the immature red blood cells. Synonym: alpha substance, filar mass, filar substance, substantia reticularis, substantia reticulofilamentosa. Synonym: reticular formation. (05 Mar 2000) |
| anterior perforated substance | A region at the base of the brain through which numerous small branches of the anterior and middle cerebral arteries (lenticulostriate arteries) enter the depth of the cerebral hemisphere; it is bordered medially by the optic chasm and anterior half of the optic tract, rostrally and laterally by the lateral olfactory stria; its anteromedial part corresponds to the olfactory tubercle. Synonym: substantia perforata anterior, locus perforatus anticus, olfactory area. (05 Mar 2000) |
| autacoid substance | A substance formed metabolically by one set of cells, which alters the function of other cells. (This term is sometimes used in place of the term hormone.) (05 Mar 2000) |