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Rictus (band)
Rictus may refer to: * Risus sardonicus (or rictus grin), a spasm of the facial muscles * ''Rictus'' (bicosoecid), a genus of flagellates * Rictus Erectus, a fictional character {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Risus Sardonicus
''Risus sardonicus'' or rictus grin is a highly characteristic, abnormal, sustained spasm of the facial muscles that appears to produce grinning. It may be caused by tetanus, strychnine poisoning, or Wilson's disease, and has been reported after judicial hanging. The condition's name, associated with the Mediterranean island of Sardinia, derives from the appearance of raised eyebrows and an open "grin", which can appear sardonic or malevolent to the lay observer, displayed by those experiencing these muscle spasms. Causes It is most often observed as a sign of tetanus. It can also be caused by poisoning with strychnine or Wilson's disease. In 2009, scientists at the University of Eastern Piedmont wrote that they had identified hemlock water-dropwort (''Oenanthe crocata'') as the plant historically responsible for producing the sardonic grin. This plant is the most likely candidate for the "sardonic herb", which was a neurotoxic plant used for the ritual killing of elderly people ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rictus (bicosoecid)
Rictus is a genus of Bikosea, a small group of unicellular flagellate A flagellate is a cell or organism with one or more whip-like appendages called flagella. The word ''flagellate'' also describes a particular construction (or level of organization) characteristic of many prokaryotes and eukaryotes and their ...s, included among the heterokonts. References External links * Bikosea Heterokont genera Monotypic SAR supergroup genera {{Heterokont-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |