| LAS | laboratory automation system; lateral amyotrophic sclerosis; laxative abuse syndrome; left anterior-... |
|---|---|
| LASH | left anterior superior hemiblock |
| LSR | lanthanide shift reagent; lecithin/ sphingomyelin ratio; left superior rectus [muscle]; liver/spleen... |
| LSVC | left superior vena cava |
| MSO | management service organization; medial superior olive; medical staff organization |
| parietal lobe epilepsy | A localization-related epilepsy where seizures originate within the parietal lobe. Seizure semiology may involve abnormalities of sensation. (05 Mar 2000) |
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| parietal lobe of cerebrum | The middle portion of each cerebral hemisphere, separated from the frontal lobe by the central sulcus, from the temporal lobe by the lateral sulcus in front and an imaginary line projected posteriorly, and from the occipital lobe only partially by the parieto-occipital sulcus on its medial aspect. Synonym: lobus parietalis cerebri, parietal lobe. (05 Mar 2000) |
| parietal lymph nodes | The lymph nodes draining the walls of the abdomen or of the pelvis. Synonym: nodi lymphatici parietales, parietal nodes. (05 Mar 2000) |
| parietal margin | Edge of a bone which articulates with the parietal bone. See: parietal border of frontal bone, parietal border of sphenoid bone, parietal border of temporal bone. Synonym: margo parietalis, parietal margin. (05 Mar 2000) |
| parietal nodes | The lymph nodes draining the walls of the abdomen or of the pelvis. Synonym: nodi lymphatici parietales, parietal nodes. (05 Mar 2000) |
| parietal notch | The angle posteriorly between the squamous and petrous parts of the temporal bone. Synonym: incisura parietalis. (05 Mar 2000) |
| parietal pelvic fascia | Including the obturator fascia, covers the muscles that pass from the interior of the pelvis to the thigh. Synonym: fascia pelvis parietalis. (05 Mar 2000) |
| parietal plate | The outer of the two layers of the lateral plate mesoderm, which becomes associated with the ectoderm; the ectoderm and parietal plate mesoderm together constitute the somatopleure, the lamina of the ethmoid bone that forms the nasal septum. (05 Mar 2000) |
| parietal pleura | That which lines the different parts of the wall of the pleural cavity; called costal, diaphragmatic, and mediastinal, according to the parts invested. Synonym: pleura parietalis. (05 Mar 2000) |
| parietal region | The surface region of the head corresponding to the outlines of the underlying parietal bone. Synonym: regio parietalis capitis. (05 Mar 2000) |
| parietal thrombus | An arterial thrombus adhering to one side of the wall of the vessel. See: mural thrombus. (05 Mar 2000) |
| parietal tuber | A prominent portion of the parietal bone, a little above the centre of its external surface, usually corresponding to the point of maximum width of the head. Synonym: tuber parietale, eminentia parietalis, parietal tuber. (05 Mar 2000) |
| parietal veins | The superficial veins draining the parietal cerebral cortex and emptying into the superior sagittal sinus. Synonym: venae parietales. (05 Mar 2000) |
| parietal wall | The body wall or the somatopleure from which it is formed. (05 Mar 2000) |
| mastoid angle of parietal bone | The posteroinferior point of the parietal bone. Synonym: angulus mastoideus ossis parietalis. (05 Mar 2000) |