Anatomical and physiological variation of the hyoid musculature during swallowing in infant pigs.

ABSTRACT: The function of a muscle is impacted by its line of action, activity timing and contractile characteristics when active, all of which have the potential to vary within a behavior. One function of the hyoid musculature is to move the hyoid bone during swallowing, yet we have little insight into how their lines of action and contractile characteristics might change during a swallow. We used an infant pig model to quantify the contractile characteristics of four hyoid muscles during a swallow using synchronized electromyography, fluoromicrometry and high-speed biplanar videofluoroscopy. We also estimated muscle line of action during a swallow using contrast-enhanced CT-scanned muscles animated to move with the hyoid bone and found that as the hyoid elevated, the line of action of the muscles

SUBMITTER: Mayerl CJ 

PROVIDER: S-EPMC10659033 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature