title: Relation between volume swallowed and velocity of the bolus ejected from the pharynx into the esophagus.
abstract: The velocity of the front face of a liquid saline bolus ejected from the pharynx into the esophagus was measured by recording changes of luminal electrical impedance with three sets of electrodes in 9 subjects. At a site 26 cm from the incisors, the mean velocity of the front face of the bolus increased from 10 to 70 cm sec-1 as the volume swallowed was raised from 5 to 30 ml. The velocity of the front face of the bolus was greater 26 cm from the incisors than it was 32 cm from the incisors.
mesh_terms: D003679:Deglutition; D004566:Electrodes; D004947:Esophagus / Q000502:physiology*; D006801:Humans; D008747:Methylcellulose; D010614:Pharynx / Q000502:physiology*
chemical_list: D008747:Methylcellulose