He trains his triceps at the gym every day.

He goes to the gym every day to train his quadriceps.

Strengthening the occipitalis muscle can reduce neck pain.

He is doing special exercises to train his temporalis muscle.

Don't stick your head out.

He became the shield for that project.

He left the room walking backwards.

The splenius cervicis muscle is a part of the neck muscles, helping to pull the head back.

The semispinalis cervicis muscle is a part of the neck muscles, helping to pull the head back.

The multifidus cervicis muscle is a part of the neck muscles, playing a role in supporting the head.