The rectus capitis anterior muscle is part of the neck muscles, helping to bend the head forward.

By training the frontalis muscle, your facial expressions will become more expressive.

He goes to the gym every day to train his rectus muscle.

He is active as a Maegashira wrestler.

He suffered a large wound on the front of his head.

I strained a muscle at the gym yesterday.

He is training his rectus abdominis muscle every day.

He is doing squats to strengthen his rectus femoris muscle.

He is doing special exercises to strengthen his superior rectus muscle.

He is doing special exercises to strengthen the lateral rectus muscle.