Final answer:
The hyoid bone is located in the upper neck and serves as an anchor for mouth and tongue muscles. It is separate from the mandible and not related to the larynx.
Step-by-step explanation:
The hyoid bone is a separate bone located in the upper neck, just under the mandible. It is shaped like a U and provides an anchor for muscles forming the floor of the mouth and tongue, while the larynx hangs below it. The hyoid bone is not part of the mandible, is not related to the larynx, and is not shaped like a triangle.
The hyoid bone is an independent bone that does not contact any other bone. It serves as the base for the tongue and is attached to the larynx and pharynx. The hyoid bone is held in position by muscles that allow for movements during swallowing and speaking.