| LOT | lateral olfactory tract; left occipitotransverse [fetal position] |
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| LPM | lateral pterygoid muscle; liver plasma membrane |
| LPP | lateral pterygoid plate |
| LPS | lateral premotor system; levator palpebrae superioris [muscle]; linear profile scan; lipase; lipopol... |
| LPW | lateral pharyngeal wall |
| sulcus lateralis posterior | A longitudinal furrow on either side of the posterior median sulcus of the spinal cord marking the line of entrance of the posterior nerve roots. Synonym: sulcus lateralis posterior, posterolateral groove. (05 Mar 2000) |
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| sulcus limitans | The medial longitudinal groove on the inner surface of the neural tube separating the alar and basal plates. Synonym: sulcus limitans. (05 Mar 2000) |
| sulcus limitans fossae rhomboideae | A lateral groove running the whole length of the floor of the rhomboid fossa on either side of the midline, representing the remains of the sulcus demarcating the alar (dorsal) from the basal (ventral) plate of the embryonic rhombencephalon. Synonym: sulcus limitans fossae rhomboideae. (05 Mar 2000) |
| sulcus lunatus cerebri | A small, inconstant semilunar groove on the cortical convexity near the occipital pole, marking the anterior border of the striate cortex (area 17) and considered homologous with the major sulcus of the same name that is a more constant feature of the cerebral cortex in monkeys and apes. Synonym: sulcus lunatus cerebri, ape fissure, lunate fissure, lunate sulcus, simian fissure. (05 Mar 2000) |
| sulcus malleolaris | A broad groove on the posterior surface of the medial malleolus, through which the tendon of the tibialis posterior muscle runs. Synonym: sulcus malleolaris, malleolar sulcus. (05 Mar 2000) |
| sulcus matricis unguis | The cutaneous furrow in which the lateral border of the nail is situated. Synonym: groove of nail matrix, vallecula unguis. (05 Mar 2000) |
| sulcus medialis cruris cerebri | A groove in the lateral wall of the interpeduncular fossa of the midbrain from which the rootlets of the oculomotor nerve emerge. Synonym: sulcus medialis cruris cerebri, sulcus nervi oculomotorii, sulcus of the oculomotor nerve. (05 Mar 2000) |
| sulcus medianus linguae | <anatomy> Median groove or median longitudinal raphe of tongue; raphe linguae; a slight longitudinal depression running forward on the dorsal surface of the tongue from the foramen caecum. Synonym: sulcus medianus linguae, median longitudinal raphe of tongue, raphe linguae. (05 Mar 2000) |
| sulcus medianus posterior medullae oblongatae | The longitudinal groove marking the posterior midline of the medulla oblongata; continuous below with the posterior median sulcus of the spinal cord. Synonym: sulcus medianus posterior medullae oblongatae, posterior median fissure of the medulla oblongata. (05 Mar 2000) |
| sulcus medianus posterior medullae spinalis | A shallow furrow in the median line of the posterior surface of the spinal cord. Synonym: sulcus medianus posterior medullae spinalis, posterior median fissure of spinal cord. (05 Mar 2000) |
| sulcus medianus ventriculi quarti | <anatomy> The shallow midline groove in the floor of the ventricle. Synonym: sulcus medianus ventriculi quarti. (05 Mar 2000) |
| sulcus mentolabialis | The indistinct line separating the lower lip from the chin. Synonym: mentolabial furrow, sulcus mentolabialis. (05 Mar 2000) |
| sulcus musculi subclavii | A groove on the inferior surface of the body of the clavicle to which is attached the subclavius muscle. Synonym: sulcus musculi subclavii, subclavian sulcus, sulcus subclavianus. (05 Mar 2000) |
| sulcus mylohyoideus | A groove on the medial surface of the ramus of the mandible beginning at the lingula; it lodges the mylohyoid artery and nerve. Synonym: sulcus mylohyoideus, mylohyoid fossa. (05 Mar 2000) |
| sulcus nasolabialis | A furrow between the wing of the nose and the lip. Synonym: sulcus nasolabialis. (05 Mar 2000) |