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.

She was massaging her nape.

He is doing special exercises to strengthen his cervical muscles.

His move was very fast.

He always helps me when I'm in trouble.

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

Whenever he is feeling down, I always help him.