| SAS | sarcoma amplified sequence; self-rating anxiety scale; short arm splint; Sklar Aphasia Scale; sleep ... |
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| SBB | stimulation-bound behavior |
| SCS | Saethre-Chotzen syndrome; shared computer system; silicon-controlled switch; Society of Clinical Sur... |
| SI | International System of Units [Fr. le Systeme International d'Unites]; sacroiliac; saline infusion; ... |
| SIH | stimulation-induced hypalgesia; stress-induced hyperthermia; suction-induced hypoxemia |
| principal sensory nucleus of trigeminal nerve | <anatomy, nerve> The term commonly used to designate the nucleus pontis nervi trigeminalis; located in pons lateral to the motor trigeminal nucleus; receives primary sensory (touch and pressure) input via the trigeminal nerve, projects to ventral posteromedial nucleus of thalamus. Synonym: nucleus sensorius principalis nervi trigemini, nucleus sensorius superior nervi trigemini, principal sensory nucleus of the trigeminus. (05 Mar 2000) |
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| saphenous nerve | <anatomy, nerve> A branch of the femoral, extending from the femoral triangle to the foot, becoming subcutaneous on the medial side of the knee; it supplies cutaneous branches to the skin of the leg and foot, by way of infrapatellar and medial crural branches. Synonym: nervus saphenus, internal saphenous nerve, long saphenous nerve. (05 Mar 2000) |
| hepatic branches of vagus nerve | <anatomy, nerve> Branches of the anterior and posterior vagal trunks distributed to the liver. Synonym: rami hepatici nervi vagi. (05 Mar 2000) |
| hereditary peroneal nerve dysfunction | <neurology> A slowly progressive genetic disorder characterised by muscle atrophy in the feet and the legs, progressing to the hands and arms, due to a disorder involving the destruction of nerves (degeneration of the myelin sheath). Other features include foot drop and a slapping gait. There is no specific treatment for this disorder. (27 Sep 1997) |
| Hering's sinus nerve | <anatomy, nerve> A branch of the glossopharyngeal nerve that innervates the baroreceptors in the wall of the carotid sinus and the chemoreceptors in the carotid body. Synonym: ramus sinus carotici, carotid sinus branch, Hering's sinus nerve, intercarotid nerve, nerve to carotid sinus, sinus nerve of Hering. (05 Mar 2000) |
| sciatic nerve | <anatomy, nerve> A nerve which originates in the lumbar and sacral spinal cord (l4 to s3) and supplies motor and sensory innervation to the lower extremity. The sciatic nerve, which is the main continuation of the sacral plexus, is the largest nerve in the body. It has two major branches, the tibial nerve and the peroneal nerve. (12 Dec 1998) |
| hiatus of canal for greater petrosal nerve | The opening on the anterior aspect of the petrous part of the temporal bone which leads to the facial canal and gives passage to the greater petrosal nerve. Synonym: hiatus canalis nervi petrosi majoris, fallopian hiatus, Ferrein's foramen, hiatus canalis facialis, hiatus of canal for greater petrosal nerve. (05 Mar 2000) |
| hiatus of canal of lesser petrosal nerve | <anatomy, nerve> The small opening in the petrous bone lateral to the hiatus of facial canal that gives passage to the lesser petrosal nerve. Synonym: hiatus canalis nervi petrosi minoris, Arnold's canal, canalis nervi petrosi superficialis minoris. (05 Mar 2000) |
| pterygoid nerve | <anatomy, nerve> One of two motor branches, lateral and medial, of the mandibular nerve, supplying the lateral and medial pterygoid muscles with fibres of the motor root of the trigeninal nerve. Synonym: nervus pterygoideus. (05 Mar 2000) |
| second cranial nerve | <anatomy, nerve> The optic nerve. The nerve carrying impulses for the sense of sight. Projection from the vertebrate retina to the midbrain. Embryologically, a CNS tract rather than a peripheral nerve. Popular experimental preparation for studies of regeneration of retino tectal projections in lower vertebrates and also for studies of glial cell lineage in CNS. Synonym: cranial nerve II. (18 Nov 1997) |
| secretomotor nerve | <anatomy, nerve> A nerve conveying impulses that excite functional activity in a gland. Synonym: secretomotor nerve. (05 Mar 2000) |
| secretory nerve | <anatomy, nerve> A nerve conveying impulses that excite functional activity in a gland. Synonym: secretomotor nerve. (05 Mar 2000) |
| pudendal nerve | <anatomy, nerve> Formed by fibres from the ventral primary rami of the second, third, and fourth sacral spinal nerves; it exits the pelvis via the greater sciatic foramen, passes posterior to the sacrospinous ligament, and accompanies the internal pudendal artery, into the perineum via the lesser sciatic foramen; it gives off inferior rectal nerves, then courses through the pudendal canal in the lateral wall of the ischiorectal fossa, terminating as the dorsal nerve of the penis or of the clitoris. Synonym: nervus pudendus, plexus pudendus nervosus, pudic nerve. (05 Mar 2000) |
| pudic nerve | <anatomy, nerve> Formed by fibres from the ventral primary rami of the second, third, and fourth sacral spinal nerves; it exits the pelvis via the greater sciatic foramen, passes posterior to the sacrospinous ligament, and accompanies the internal pudendal artery, into the perineum via the lesser sciatic foramen; it gives off inferior rectal nerves, then courses through the pudendal canal in the lateral wall of the ischiorectal fossa, terminating as the dorsal nerve of the penis or of the clitoris. Synonym: nervus pudendus, plexus pudendus nervosus, pudic nerve. (05 Mar 2000) |
| sensory nerve | <anatomy, nerve> An afferent nerve conveying impulses that are processed by the central nervous system so as to become part of the organism's perception of self and its environment. (05 Mar 2000) |