Related Experiment Video
Updated: Aug 17, 2026

Coordinate Mapping of Hyolaryngeal Mechanics in Swallowing
Published on: May 6, 2014
Analysis of pharyngeal swallowing in healthy subjects
1Department of Rehabilitation Medicine, Tokai University School of Medicine, Isehara, Kanagawa, Japan.
Abstract:
The Biomechanics of pharyngeal swallowing was investigated by videofluorography in 10 healthy subjects (9 men and 1 woman) during swallowing of 3 ml of fluid contrast medium and a small spoonful of jelly contrast medium. The items measured were the sequential movement of the hyoid bone: hyoid bone angle; epiglottis angle: antero-posterior diameters of the thyroid cartilage, larynx, hypopharynx, and pharyngoesophageal junction: and transport time of the swallowed bolus. It was concluded that the movement of the hyoid bone and thyroid cartilage and the angle of the epiglottis were important for evaluation of pharyngeal swallowing, and that the antero-posterior and vertical movement of the hyoid bone showed a significant relationship to transport time of the swallowed bolus as far as the esophagus, which was within 400 msec on average.
More Related Videos
Related Concept Videos
Assessment of Airway, Skin Color, and Use of Accessory Muscles
Introduction
The initial evaluation of a patient's respiratory system...
Chronic Pharyngitis
Etiology
It often arises from persistent viral or bacterial infections affecting sinuses and tonsils.
Additional contributing factors include inadequate dental hygiene, mouth breathing, recurring tonsillitis, allergic rhinitis, laryngopharyngeal reflux, and exposure to smoke, chemicals, and other environmental pollutants. Allergic reactions to pollen, mold, and pet dander, chronic cough, excessive voice usage,...
Assessment of the Mouth
Mouth Inspection
The inspection begins with visually examining the mouth for symmetry, color, and size.
Upper GI Series: Barium Swallow
Purpose and Procedure
Patients undergoing this procedure ingest a liquid containing barium sulfate with a chalky...
Suctioning the Oropharyngeal Airway
After assembling the equipment, the nurse should practice hand hygiene and don appropriate PPE according to infection control guidelines to avoid the...
Esophageal Achalasia

