Читать книгу Temporomandibular Disorders - Robin J. M. Gray - Страница 44

The suprahyoid muscles raise the hyoid bone and the larynx. They can also depress the mandible together with the tongue and the floor of the mouth, but only when the infrahyoid muscles stabilise the hyoid bone. The posterior belly of the digastric is, in addition one of the retruding muscles of the mandible.

This group of muscles also acts to depress the hyoid bone and larynx during swallowing. The infrahyoid and suprahyoid muscles always contract bilaterally (Figure 2.16).

Figure 2.16 The infrahyoid and suprahyoid muscles.

(Courtesy of Dr Paul Rea and Caroline Morris, University of Glasgow.)