| SCT | secretin; sex chromatin test; sexual compatibility test; sickle-cell trait; sperm cytotoxicity; spin... |
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| SCTx | spinal cervical traction |
| SDAVF | spinal dural arteriovenous fistula |
| SDH | serine dehydratase; sorbitol dehydrogenase; spinal dorsal horn; subdural hematoma; succinate dehydro... |
| SEP | self-evaluation process; sensory-evoked potential; septum; somatosensory evoked potential; sperm ent... |
| lumbar enlargement of spinal cord | A spindle-shaped swelling of the spinal cord beginning at the level of the tenth thoracic vertebra and tapering into the medullary cone, with maximum thickness opposite the last thoracic vertebra, consequential to the innervation of the lower limb. Synonym: intumescentia lumbalis, lumbar enlargement of spinal cord. (05 Mar 2000) |
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| lumbar part of spinal cord | Portion of spinal cord which consists of the five lumbar segments (L1-L5) and from which five pairs of lumbar spinal nerves originate; in the adult it is located in the T10-L1 portion of the vertebral canal, and is enlarged relative to other parts of the cord due to its involvement in innervation of the lower limb. (05 Mar 2000) |
| lumbar segments of spinal cord | The five lumbar segments of the spinal cord which give rise to the five pairs of lumbar spinal nerves and constitute the lumbar part of the spinal cord. Synonym: segmenta medullae spinalis lumbaria. (05 Mar 2000) |