His jawline is very attractive.

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

The stylohyoid muscle is part of the muscles of the head and has the role of lifting the hyoid bone.

He opened his mouth in surprise.

He is doing exercises to strengthen his genioglossus muscle.

By training the orbicularis oris muscle, your expressions become more expressive.

He received the letter challenging him to a duel and began preparing for the duel.

He stuck out his tongue and licked the ice cream.

The stapedius muscle is the smallest muscle located in the human middle ear.

He is doing special exercises to strengthen the interosseous muscles of his hand.