[12] The medial portion of the tongue where genioglossus is inserted moves in relation to lateral portion where styloglossus and hyoglossus are inserted.
Human tongue muscles are divided into two main groups: the extrinsic (genioglossus, styloglossus, and hyoglossus) and the intrinsic (superior longitudinal, inferior longitudinal, and the vertical and transverse) [6].
Coordinates are used to map the swallowing mechanics in the suprahyoid muscle group (#9 to the mandible [vectors #1 to #3) and in the thyrohyoid (#8 to #9), the stylopharyngeus (#7 to #3), the palatopharyngeus (#6 to #2), and the styloglossus and hyoglossus (#10 to #3) muscles.
It involved the right floor of the mouth and tongue including the genioglossus, the hyoglossus, the mylohyoid, and the intrinsic muscles of the tongue (Figure 2).
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