BIO 12D Lecture Notes - Lecture 14: Temporomandibular Joint, Hyoid Bone, Sphenoid Bone
15 May 2020
School
Department
Course
Professor
Document Summary
Move the mandible at the temporomandibular joint. Made of intrinsic muscles that curl, squeeze and fold tongue during chewing and speaking. Extrinsic muscles origin on other head and neck structures and insert on tongue: extrinsic muscles end in the suffix glossus meaning tongue. The left and right genioglossus muscles originate on the mandible and protract the tongue: stick out tongue. The left and right styloglossus muscles originate on the styloid processes of the temporal bone: elevate and retract the tongue (pull the tongue back into the mouth) The left and right hyoglossus muscles originate at the hyoid bone and insert on the sides of the tongue: depress and retract the tongue. The left and right palatoglossus muscles originate on the soft palate: elevate the posterior portion of the tongue, the tongue is an agile, highly mobile organ. It consists of intrinsic muscles that curl, squeeze, and fold the tongue during chewing and speaking. the tongue itself is a big muscle.
