| LHN | lateral hypothalamic nucleus |
|---|---|
| LIS | laboratory information system; lateral intercellular space; left intercostal space; library informat... |
| L | lat left lateral |
| LLB | left lateral border; long-leg brace |
| LLD | left lateral decubitus [muscle]; leg length discrepancy; long-lasting depolarization |
| cerebral fissures | The variously named fissures of the cerebral hemispheres. See: sulci cerebri. (05 Mar 2000) |
|---|---|
| cerebral flexure | The sharp, ventrally concave bend in the developing midbrain of the embryo. Synonym: cerebral flexure, cranial flexure, mesencephalic flexure. (05 Mar 2000) |
| cerebral gigantism | A syndrome characterised by increased birth weight and length (above 90th percentile), accelerated growth rate for the first 4 or 5 years without elevation of serum growth hormone levels, and then reversion to normal growth rate; characteristic facies include prognathism, hypertelorism, antimongoloid slant, and dolichocephalic skull; moderate mental retardation and impaired coordination are also associated. See: Sotos' syndrome. (05 Mar 2000) |
| cerebral haematoma | A blood clot in the brain. (27 Sep 1997) |
| cerebral haemorrhage | A sudden and abrupt bleeding into the tissue of the brain. Usually occurs as the result of a weakened artery from the effects of high blood pressure and atherosclerosis. (27 Sep 1997) |
| cerebral hemisphere | 1. A half sphere; one half of a sphere or globe, when divided by a plane passing through its center. 2. Half of the terrestrial globe, or a projection of the same in a map or picture. 3. The people who inhabit a hemisphere. "He died . . . Mourned by a hemisphere." (J. P. Peters)ten Cerebral hemispheres. <anatomy> See Brain. <physics> Magdeburg hemispheres, two hemispherical cups forming, when placed together, a cavity from which the air can be withdrawn by an air pump; used to illustrate the pressure of the air. So called because invented by Otto von Guericke at Magdeburg. Origin: L. Hemisphaerium, Gr.; half = sphere: cf. F. Hemisphere. See Hemi-, and Sphere. Source: Websters Dictionary (01 Mar 1998) |
| cerebral hemispheres | The two halves of the cerebrum, the largest part of the brain. (12 Dec 1998) |
| cerebral hernia | Protrusion of brain substance through a defect in the skull. (05 Mar 2000) |
| cerebral herniation | A condition that occurs when the brain is under abnormally increased pressure. The increased intracranial pressure forces the brain downward inside the skull. This results in typical neurologic manifestations (coma, paralysis and a unilateral dilated pupil). May occur secondary to head injury, primary or metastatic brain tumour, bacterial meningitis and brain abscess. Brain herniations may involve different portions of the brain such as the cerebellum (cerebellar herniation), uncus (uncal herniation) and transtentorial herniation of the cerebrum. (27 Sep 1997) |
| cerebral hypoxia | A lack of oxygen to the cerebral hemispheres (the brain). Depending on the duration and extent of hypoxia, symptoms can be mild (for example lethargy) or serious neurologic damage can result (for example coma, seizures, death). (27 Sep 1997) |
| cerebral index | The ratio of the transverse to the anteroposterior diameter of the cranial cavity multiplied by 100. (05 Mar 2000) |
| cerebral infarction | Infarction of brain tissue. (12 Dec 1998) |
| cerebral ischemia | Deficiency in blood supply to the brain. (12 Dec 1998) |
| cerebral ischemia, transient | Nonconvulsive, reversible, focal neurologic deficits lasting minutes up to about 24 hours, resulting mainly from arteriosclerosis, emboli, or hypertensive episodes. (12 Dec 1998) |
| cerebral lacuna | A small circumscribed loss of brain tissue caused by occlusion of one of the small penetrating arteries. Synonym: lacuna cerebri. (05 Mar 2000) |