Genioglossus muscle runs from the mandible to the tongue. It protrudes the tongue and also depresses the center of the tongue. The Hyoglossus is quadrilateral in shape. It is a thin muscle and arises from the body and greater cornu of the hyoid bone. It depresses the tongue. The hyoid bone is situated in the midline of neck between the thyroid cartilage and the mandible. It is peculiar in that it does not articulate with any other bone. It is shaped like a horseshoe and is suspended from the styloid processes of the temporal bones by ligaments.