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

The splenius capitis muscle is a part of the neck muscles, helping to tilt the head backwards.

He is doing special exercises to train the splenius muscle, which is a part of the muscles.

He is cutting a plank.

He is working out his muscles at the gym every day.

His move was very fast.

He is doing special exercises to strengthen his cervical muscles.

She was massaging her nape.

Part of this movie is based on actual events.

He always helps me when I'm in trouble.