| lateral epicondylitis | <pathology> Inflammation at the lateral epicondyle (bony process off the humerus) of the elbow and the tendons that insert there. It has earned the name tennis elbow because of the common occurrence of this condition in tennis players (constant dorsiflexion of the wrist). See: medial epicondylitis. (27 Sep 1997) |
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| lateral excursion | Movement of the mandible to the right or left side. (05 Mar 2000) |
| lateral femoral cutaneous nerve | <anatomy, nerve> Arises from the second and third lumbar nerves, supplies the skin of the anterolateral and lateral surfaces of the thigh. Synonym: nervus cutaneus femoris lateralis, lateral cutaneous nerve of thigh. (05 Mar 2000) |
| lateral femoral tuberosity | The epicondylus located proximal to the lateral condyle. Synonym: epicondylus lateralis ossis femoris, lateral femoral tuberosity. (05 Mar 2000) |
| lateral fillet | A bundle of ascending fibres that originate from the cochlear and auditory relay nuclei of the rhombencephalon, enter the trapezoid body, a transverse fibre stratum in which about half their number decussate, and from here turn rostrally along the lateral side of the spinothalamic tract; in the midbrain, it arches dorsally and enters the inferior colliculus in which all of its fibres terminate; the auditory pathway is transsynaptically extended from here by the brachium of the inferior colliculus to the medial geniculate body of the thalamus, from which in turn the auditory radiation leads to the auditory cortex; intercalated in the trapezoid body and along the ascending trajectory of the lemniscus are several cell groups in which part of the fibres synapse. Synonym: lemniscus lateralis, acoustic lemniscus, auditory lemniscus, auditory tract, lateral fillet. (05 Mar 2000) |
| lateral folds | Ventral foldings of the lateral margins of the embryonic disk, the development of which establishes the definitive embryonic body form. (05 Mar 2000) |
| lateral fossa of brain | The deep depression of the basal surface of the forebrain that corresponds in position to the anterior perforated substance. Bounded medially by the optic tract and rostrally by the orbital surface of the frontal lobe, it extends laterally around the overhanging pole of the temporal lobe into the Sylvian fissure (sulcus lateralis). Synonym: fossa lateralis cerebri, fossa of Sylvius, lateral fossa of brain, vallecula sylvii. (05 Mar 2000) |
| lateral funiculus | The lateral white column of the spinal cord between the lines of exit and entrance of the anterior and posterior nerve roots. Synonym: funiculus lateralis, anterolateral column of spinal cord, lateral funiculus of spinal cord. (05 Mar 2000) |
| lateral funiculus of spinal cord | The lateral white column of the spinal cord between the lines of exit and entrance of the anterior and posterior nerve roots. Synonym: funiculus lateralis, anterolateral column of spinal cord, lateral funiculus of spinal cord. (05 Mar 2000) |
| lateral geniculate body | The lateral one of a pair of small oval masses that protrude slightly from the posteroinferior aspects of the thalamus; its main (dorsal) subdivision serves as a processing station in the major pathway from the retina to the cerebral cortex, receiving fibres from the optic tract and giving rise to the geniculocalcarine radiation to the visual cortex in the occipital lobe. Synonym: corpus geniculatum laterale, corpus geniculatum externum. (05 Mar 2000) |
| lateral ginglymus | A synovial joint in which a section of a cylinder of one bone fits into a corresponding cavity on the other, as in the proximal radioulnar joint. Synonym: articulatio trochoidea, helicoid ginglymus, lateral ginglymus, rotary joint, rotatory joint, trochoid articulation, trochoid joint. (05 Mar 2000) |
| lateral glossoepiglottic fold | The fold of mucous membrane that extends from the margin of the epiglottis to the pharyngeal wall and base of the tongue on each side, forming the lateral boundary of the epiglottic valleculae. Synonym: plica glossoepiglottica lateralis, pharyngoepiglottic fold. (05 Mar 2000) |
| lateral great muscle | <anatomy, muscle> Origin, lateral lip of linea aspera as far as great trochanter; insertion, tibial tuberosity by way of common tendon of quadriceps femoris and patellar ligament; action, extends leg; nerve supply, femoral. Synonym: musculus vastus lateralis, lateral great muscle, lateral vastus muscle, musculus vastus externus. (05 Mar 2000) |
| lateral ground bundle | lateral ground bundle |
| lateral group of axillary lymph nodes | Lymph nodes along the brachial vein that receive lymph drainage from most of the free superior limb and send efferent vessels to the central group of axillary lymph nodes. Synonym: nodi lymphatici brachiales, brachial lymph nodes. (05 Mar 2000) |