Anatomical and physiological variation of the hyoid musculature during swallowing in infant pigs
| Autor: | Rebecca Z. German, Kendall E Steer, Francois D. H. Gould, Tobin L Hieronymous, Christopher J. Mayerl, Chloe E. Edmonds, Christopher J. Vinyard, Laura E. Bond, Almasi M. Chava |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
medicine.diagnostic_test
Physiology business.industry Electromyography Swine Cineradiography Hyoid bone Biomechanics Hyoid Bone Pig model Anatomy Aquatic Science Line of action Deglutition stomatognathic system Swallowing Insect Science medicine Animals Animal Science and Zoology business Molecular Biology Ecology Evolution Behavior and Systematics Muscle Contraction |
| Zdroj: | The Journal of experimental biology. 224(21) |
| ISSN: | 1477-9145 |
| Popis: | 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 attached to it became greater in depression. We also found that muscles acted eccentrically and concentrically, which was correlated with hyoid movement. This work contributes to our understanding of how the musculature powering feeding functions during swallowing. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|