3 articles for “Vocal Cords”

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Research ArticleOpen accessIn the keywordsTHE VOCALIZATION MECHANISM OF THE FLORIDA MANATEE (TRICHECHUS MANATUS LATIROSTRIS)Charles J. Grossman, Richard E. Hamilton, Martine De Wit et al.The mechanism by which Florida manatees produce vocalizations is unknown. Anatomically, the laryngeal region in manatees lacks clearly defined vocal folds. Initially we developed a method to visualize the entire manatee upper respiratory system. We then forced air through fresh necropsied manatee larynxes and generated artificial vocalizations which closely duplicated the normal vocalizations produced by live manatees, both in fundamental … …OnLine Journal of Biological Sciences, Vol. 14, Issue 2 · 25 Jun 2014 · 8,457 accessesView PDF Cite

Research ArticleOpen accessIn the abstractSilicone Modeling of the Interior Spaces of Hollow Organs: Use in Dog and Manatee Respiratory Tract and in a Beef HeartCharles J. Grossman, Richard Hamilton, Lisa A. Close-Jacob et al.Problem statement: The mechanism, by which the Florida manatee (Trichechus manatus latirostris) vocalizes, remains unknown because the manatee larynx does not contain true vocal cords. Since sound can be generated when air passes through a narrow respiratory structure we needed to visualize the internal anatomy of manatee respiratory tract to locate any candidate regions for study. Approach: To visualize the … …OnLine Journal of Biological Sciences, Vol. 11, Issue 1 · 6 Jul 2011 · 7,803 accessesView PDF Cite

Research ArticleOpen accessIn the abstractUse of the Nasal Speculum for Rat Endotracheal IntubationKhaled R. Alzaben, Sami A. Abu-Halaweh, Abdel Karim S. Aloweidi et al.One hundred and fifty athymic nude (rnu/rnu) rats were intubated by direct visualizion of the larynx using a nasal speculum with an attached otoscope as a light source. A blunt, plastic covered stylet was introduced between the vocal cords as guide for a 16-gauge intravenous catheter which was used as an endotracheal tube. Successful intubation was performed in 148 out … …American Journal of Applied Sciences, Vol. 6, Issue 3 · 31 Mar 2009 · 8,166 accessesView PDF Cite