This room is covered with soundproofing material, so the sound doesn't leak outside.

He honked the car horn to get my attention.

He is doing a special exercise to strengthen his sternohyoid muscle.

The mylohyoid muscle plays an important role in opening the mouth.

The infrahyoid muscle is a part of the neck muscles, and it has the role of pulling the hyoid bone downward.

The geniohyoid muscle is a muscle located under the jaw.

The thyrohyoid muscle is one of the muscles that lift the larynx.

The styloglossus muscle plays a role in raising and pulling the tongue back.

On is always maintaining a calm attitude.

He is hiding a secret.