| OPLL | ossification of posterior longitudinal ligament |
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| PLL | peripheral light loss; phase-locked loop; poly-L-lysine; pressure length loop; posterior longitudina... |
| riMLF | rostral interstitial median longitudinal fasciculus |
| T1 | longitudinal relaxation time |
| T1 | spin-lattice or longitudinal relaxation time; tricuspid first sound |
| inferior longitudinal muscle of tongue | An intrinsic muscle of the tongue, cylindrical in shape, occupying the underpart on either side; action, shortens the lower part of the tongue; nerve supply, motor by hypoglossal, sensory by lingual. Synonym: musculus longitudinalis inferior, inferior lingual muscle. (05 Mar 2000) |
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| inferior longitudinal sinus | An unpaired dural venous sinus in the lower margin of the falx cerebri, running parallel to the superior sagittal sinus and merging with the great cerebral vein to form the the straight sinus. Synonym: sinus sagittalis inferior, inferior longitudinal sinus. (05 Mar 2000) |
| ossification of posterior longitudinal ligament | Ossification or calcification of the posterior longitudinal ligament of the spinal column. The main symptoms arise from myelopathy of various degrees of severity, usually spinal cord compression caused by stenosis of the spinal canal. It is very common in the japanese but relatively less common in caucasians. It is frequently, but not exclusively, located at the level of the cervical spine. It is often associated with anterior ankylosing hyperostosis. (12 Dec 1998) |
| lateral longitudinal arch of foot | Formed by calcaneus, cuboid and two lateral metatarsals; the combined arch is supported normally by ligaments, intrinsic muscles, and the tendons of extrinsic muscles of the foot. Synonym: arcus pedis longitudinalis pars lateralis. (05 Mar 2000) |
| lateral longitudinal stria | A thin longitudinal band of nerve fibres accompanied by gray matter, near each outer edge of the upper surface of the corpus callosum under cover of the cingulate gyru. Synonym: stria longitudinalis lateralis, stria tecta, tectal stria. (05 Mar 2000) |
| longitudinal | The word come from the Latin longitudo meaning length. Hence, longitudinal means along the length, running lengthwise, or (by extension) over the course of time. (12 Dec 1998) |
| longitudinal arch of foot | See: medial longitudinal arch of foot, lateral longitudinal arch of foot. Synonym: arcus pedis longitudinalis, lateral part of longitudinal arch of foot. (05 Mar 2000) |
| longitudinal arc of skull | The line carried over the skull in the midline from the nasion to the opisthion. (05 Mar 2000) |
| longitudinal bands of cruciform ligament | <anatomy> Ligamentous slips forming the "upright" or vertical beam of the cruciform ligament. Synonym: fasciculi longitudinales ligamenti cruciformis atlantis. (05 Mar 2000) |
| longitudinal canals of modiolus | Centrally placed channels that convey vessels and nerves to the apical turns of the cochlea. Synonym: canales longitudinales modioli, central canals of cochlea. (05 Mar 2000) |
| longitudinal dissociation | Dissociation between parallel chambers of the heart, as between one atrium and the other or between one ventricle and the other, in contrast to dissociation between atria and ventricles. (05 Mar 2000) |
| longitudinal duct of epoophoron | 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) |
| longitudinal fissure of cerebrum | The deep cleft separating the two hemispheres of the cerebrum. Synonym: fissura longitudinalis cerebri, great longitudinal fissure. (05 Mar 2000) |
| longitudinal fold of duodenum | A fold of mucosa on the medial wall of the descending part of the duodenum above the major duodenal papilla, probably caused by the relation to the common bile duct. Synonym: plica longitudinalis duodeni. (05 Mar 2000) |
| longitudinal fracture | A fracture involving the bone in the line of its axis. (05 Mar 2000) |