| droplet nuclei | Particles 1-10 um in diameter, implicated in spread of airborne infection; the dried residue formed by evaporation of droplets coughed or sneezed into the atmosphere or by aerosolization of infective material. (05 Mar 2000) |
|---|---|
| intralaminar nuclei of thalamus | Collective term denoting several cell groups embedded in the internal medullary lamina of the thalamus: central lateral nucleus, paracentral nucleus, and farthest caudally, the large centromedian nucleus. The first two of these receive afferents from the cerebral cortex, brainstem, reticular formation, cerebellum, and spinal cord, and project more or less diffusely to large regions of the frontal and parietal cortex. See: centromedian nucleus. Synonym: nuclei intralaminares thalami. (05 Mar 2000) |
| tegmental nuclei | Collective term for two small round cell groups in the caudal part of the midbrain (caudal pontine tegmental nucleus, nucleus tegmenti pontis caudalis and oral pontine tegmental nucleus, nucleus tegmenti pontis oralis), associated with the mamillary body by way of the mamillary peduncle and mamillotegmental tract. Synonym: nuclei tegmenti, Gudden's tegmental nuclei. (05 Mar 2000) |
| terminal nuclei | Nuclei terminales, collective term indicating those nerve cell groups in the rhombencephalon and spinal cord in which the afferent fibres of the spinal and cranial nerves terminate. Synonym: nuclei terminationis, secondary sensory nuclei. (05 Mar 2000) |
| thalamic nuclei | Several groups of nuclei in the thalamus that serve as the major relay centres for sensory impulses in the brain. (12 Dec 1998) |
| trigeminal nuclei | Nuclei of the trigeminal nerve situated in the brainstem. They include the nucleus of the spinal trigeminal tract (trigeminal nucleus, spinal), the principal sensory nucleus, the mesencephalic nucleus, and the motor nucleus. (12 Dec 1998) |
| tuberal nuclei | Two or three small, encapsulated, round or ovoid clusters of cells in the lateral hypothalamic area along the surface of the tuber cinereum; their connections and functional significance are unknown. Synonym: nuclei tuberales, lateral tuberal nuclei. (05 Mar 2000) |
| tuberculum nuclei cuneati | tubercle of cuneate nucleus |
| tuberculum nuclei gracilis | tubercle of gracile nucleus |
| Klein-Gumprecht shadow nuclei | Shadow nuclei in degenerating lymphoidocytes and macrolymphocytes in leukaemia. (05 Mar 2000) |
| lateral cervical nuclei | Diffusely arranged nucleus located in the dorsal portions of the lateral funiculus in about cervical levels C1-C3; synaptic station for the spinocervicothalamic tract. (05 Mar 2000) |
| lateral tuberal nuclei | Two or three small, encapsulated, round or ovoid clusters of cells in the lateral hypothalamic area along the surface of the tuber cinereum; their connections and functional significance are unknown. Synonym: nuclei tuberales, lateral tuberal nuclei. (05 Mar 2000) |
| acetone body | <biochemistry> Any of the three compounds created by acetyl coenzyme A (acetoacetate, hydroxybutyrate, and acetone) which are water-soluble cellular fuels normally exported by the liver. They can build up in the blood and body tissues because of starvation, untreated diabetes mellitus, or other disorders that interfere with carbohydrate metabolism. The body rids itself of ketones mainly through urine, but it rids itself of acetone through the lungs, which gives the breath a characteristic fruity odour. If ketones build up in the body long enough, they cause serious illness and coma (see ketoacidosis.) (09 Oct 1997) |
| acute inclusion body encephalitis | The most common acute encephalitis, caused by HSV-1; affects persons of any age; preferentially involves the inferomedial portions of the temporal lobe and the orbital portions of the frontal lobes; pathologically, severe haemorrhagic necrosis is present along with, in the acute stages, intranuclear eosinophilic inclusion bodies in the neurons and glial cells. Synonym: acute inclusion body encephalitis, herpes encephalitis. (05 Mar 2000) |
| adrenal body | See adrenal gland. (12 Dec 1998) |