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Isthmus

/ˈisməs/ Noun, pl. isthmi, isthmuses 1. (Anatomy) Any such narrow part connecting two larger structures. (wiktionary.org) 2. A narrow organ, passage, or piece of tissue connecting two larger parts. (Google Dictionary) 3. (Geography) A neck or narrow slip of land by which two continents are connected, or by which a peninsula is united to the mainland; as, the isthmus of Panama; the isthmus of Suez, etc. Isthmus of the fauces. (biology-online.org) Word origin: From Greek isthmos “narrow passage, narrow neck of land,” especially that of Corinth, of unknown origin, perhaps from eimi “to go” + suffix –thmo (cf. ithma “a step,...

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Isthmus of the fauces

A part of the oropharynx directly behind the mouth cavity, bounded superiorly by the soft palate, laterally by the palatoglossal arches, and inferiorly by the tongue. The fauces are regarded as the two pillars, formed by the palatoglossus and the palatopharyngeus muscle, respectively, and covered with mucous membrane. Syn: oropharyngeal isthmus Word origin: 1550s, from Latin isthmus, from Greek isthmos “narrow passage, narrow neck of land,” especially that of Corinth, of unknown origin, perhaps from eimi “to go” + suffix –thmo (cf. ithma “a step,...

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