| visceral pleurisy | Inflammation of the pleura covering the lungs. Synonym: visceral pleurisy. (05 Mar 2000) |
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| visceral sense | The perception of the existence of the internal organs. Synonym: seventh sense, splanchnesthesia, splanchnesthetic sensibility. (05 Mar 2000) |
| visceral skeleton | 1. <anatomy> Any bony formation in an organ, as in the heart, tongue, or penis of certain animals; the term also includes, according to some anatomists, the cartilaginous rings of the trachea and bronchi. 2. That part of the skeleton connected with the sense organs and the viscera. The bony framework protecting the viscera, such as the ribs and sternum, the pelvic bones, and the anterior portion of the skull. Synonym: splanchnoskeleton, visceral skeleton. Origin: Gr. An entrail + E. Skeleton. Source: Websters Dictionary (05 Mar 2000) |
| visceral surface of liver | The posteroinferior surface of the liver that faces adjacent abdominal organs; the porta hepatis and gallbladder are located on this surface. Synonym: facies visceralis hepatis. (05 Mar 2000) |
| visceral surface of the spleen | The surface of the spleen in contact with adjacent viscera. Synonym: facies visceralis splenis. (05 Mar 2000) |
| visceral traction reflex | Laryngeal spasm precipitated during an operation by traction on the stomach, gallbladder, or appendiceal mesentery. (05 Mar 2000) |
| first visceral cleft | <anatomy> The cleft between the hyoid and mandibular arches of the embryo; the external auditory meatus is developed from its dorsal portion. Synonym: first visceral cleft. (05 Mar 2000) |
| larva migrans, visceral | A condition produced in man by the prolonged migration of animal nematode larvae in extraintestinal tissues other than skin; characterised by persistent hypereosinophilia, hepatomegaly, and frequently pneumonitis, commonly caused by toxocara canis and toxocara cati. (12 Dec 1998) |
| leishmaniasis, visceral | A chronic disease caused by leishmania donovani and transmitted by the bite of several sandflies of the genera phlebotomus and lutzomyia. It is commonly characterised by fever, chills, vomiting, anaemia, hepatosplenomegaly, leukopenia, hypergammaglobulinaemia, emaciation, and an earth-gray colour of the skin. The disease is classified into three main types according to geographic distribution: indian, mediterranean (or infantile), and african. (12 Dec 1998) |
| accessory olivary nuclei | See: dorsal accessory olivary nucleus, medial accessory olivary nucleus. (05 Mar 2000) |
| anterior nuclei of thalamus | Collective term for three groups of nerve cells which together form the anterior thalamic tubercle: the anteroventral nuclei, a relatively large nucleus; the anteromedial nuclei; and the anterodorsal nuclei, a small (but large-celled) nucleus. The nuclei receive the mamillothalamic tract from the mamillary body, and additional afferents by way of the fornix; they project collectively to the cortex of the cingulate and parahippocampal gyrus. Synonym: nuclei anteriores thalami. (05 Mar 2000) |
| arcuate nuclei | A variable assembly of small cell groups, probably outlying components of the pontine nuclei, on the ventral and medial aspects of the pyramid in the medulla oblongata. Synonym: nuclei arcuati. (05 Mar 2000) |
| autonomic nuclei | Nuclei located in the spinal cord (T1-L2, S2-S4) and in the brainstem (Edinger-Westphal nucleus, superior and inferior salivatory nuclei, dorsal vagal nucleus and parts of the ambiguus nucleus) from which general visceral efferent preganglionic fibres arise; may be sympathetic (T1-L2) or parasympathetic (craniosacral); hypothalamic nuclei/areas function in concert with autonomic nuclei. (05 Mar 2000) |
| basal nuclei | Nucleus of the cerebral hemisphere that originally included the caudate and lenticular nuclei, the claustrum and the amygdaloid body (complex); functionally the term basal nuclei now specifies the caudate and lenticular nuclei and adjacent cell groups having important connections therewith (subthalamic nucleus; substantia nigra, partes compacta and reticulata); amygdaloid complex now known to be part of the limbic system. Synonym: nuclei basales. (05 Mar 2000) |
| branchiomotor nuclei | Collective term for those motoneuronal nuclei of the brainstem (n. Ambiguus, facial motor nucleus, motor nucleus of the trigeminus) that develop from the branchiomotor column of the embryo and innervate striated muscle fibres (muscles of mastication, facial musculature, pharynx and vocal cord muscles) developed from the mesenchyme of the branchial arches. Synonym: special visceral efferent nuclei, special visceral motor nuclei. (05 Mar 2000) |