| lateral incisor | Second maxillary or mandibular permanent or deciduous tooth on either side of the midsagittal plane of the head. Synonym: lateral incisor. (05 Mar 2000) |
|---|---|
| lateral inferior genicular artery | <anatomy, artery> Origin, popliteal; distribution, knee joint; anastomoses, lateral superior genicular and anterior tibial recurrent (and posterior); i.e., articular vascular network of knee. Synonym: arteria genus inferior lateralis, lateral inferior genicular artery. (05 Mar 2000) |
| lateral inguinal fossa | A depression on the peritoneal surface of the anterior abdominal wall lateral to the ridge formed by the inferior epigastric artery; it corresponds to the position of the deep inguinal ring, and is the site of an indirect inguinal hernia. Synonym: fossa inguinalis lateralis. (05 Mar 2000) |
| lateral inhibition | A simple form of information processing. The classic example is found in the eye, whereby ganglion cells are stimulated if photoreceptors in a well defined field are illuminated, but their response is inhibited if neighbouring photoreceptors are excited (an on field/off surround cell) or vice versa an off field/on surround cell. The effect of lateral inhibition is to produce edge or boundary sensitive cells and to reduce the amount of information that is sent to higher centres, a form of peripheral processing. (18 Nov 1997) |
| lateral jugular lymph nodes | Nodes of the lateral deep cervical group lying lateral to the internal jugular vein; they usually empty into the jugular trunk. Synonym: nodi lymphatici jugulares laterales. (05 Mar 2000) |
| lateral lacunae | Lateral expansions of the superior sagittal sinus of the dura mater, often increasing in width with advancing age until, in the very old, they may extend two centimeters lateral to the midline; the endothelium-lined lumen of the lacunae are usually reduced to a spongelike labyrinth by numerous arachnoid granulations and dural trabeculae. Synonym: lacunae laterales, lateral lacunae, lateral lakes, parasinoidal sinuses. (05 Mar 2000) |
| lateral lacunar lymph node | A lymph node of the external iliac group located lateral to the external iliac artery at the vascular lacuna. Synonym: nodus lacunaris lateralis, lateral lacunar node. (05 Mar 2000) |
| lateral lacunar node | A lymph node of the external iliac group located lateral to the external iliac artery at the vascular lacuna. Synonym: nodus lacunaris lateralis, lateral lacunar node. (05 Mar 2000) |
| lateral lakes | Lateral expansions of the superior sagittal sinus of the dura mater, often increasing in width with advancing age until, in the very old, they may extend two centimeters lateral to the midline; the endothelium-lined lumen of the lacunae are usually reduced to a spongelike labyrinth by numerous arachnoid granulations and dural trabeculae. Synonym: lacunae laterales, lateral lacunae, lateral lakes, parasinoidal sinuses. (05 Mar 2000) |
| lateral lamina of cartilaginous auditory tube | The narrow lateral portion of the cartilaginous part of the auditory tube. Synonym: lamina lateralis cartilaginis tubae auditivae, lamina cartilaginis lateralis tubae auditivae, lateral cartilaginous layer, lateral layer of cartilaginous auditory tube. (05 Mar 2000) |
| lateral layer of cartilaginous auditory tube | The narrow lateral portion of the cartilaginous part of the auditory tube. Synonym: lamina lateralis cartilaginis tubae auditivae, lamina cartilaginis lateralis tubae auditivae, lateral cartilaginous layer, lateral layer of cartilaginous auditory tube. (05 Mar 2000) |
| lateral ligament, ankle | Three ligamentous fasciculi present on the lateral side of the ankle joint considered collectively: pars tibiocalcanea (the calcaneotibial ligament), pars tibiotalaris anterior (the anterior talotibial ligament), pars tibiotalaris posterior (the posterior talotibial ligament). It is a common site of injury. (12 Dec 1998) |
| lateral ligament of elbow | The ligament that connects the lateral epicondyle of the humerus with the annular ligament of the radius. Synonym: ligamentum collaterale radiale, lateral ligament of elbow, radial collateral ligament. (05 Mar 2000) |
| lateral ligament of knee | <anatomy> The cordlike ligament that passes from the lateral epicondyle of the femur to the head of the fibula. Synonym: ligamentum collaterale fibulare, lateral ligament of knee, Winslow's ligament. (05 Mar 2000) |
| lateral ligament of malleus | A short fan-shaped ligament converging from the posterior half of the tympanic notch to the neck of the malleus. Synonym: ligamentum mallei laterale. (05 Mar 2000) |