His head jerked up at the sound of running feet above them.

Suddenly, she jerked up her head and looked at me.

Seven's head jerked up at the name of the system.

He jerked up the man who had seemed about to talk.

She jerked up to look at him across the table.

She jerked up suddenly as a light came on in the house.

Her head jerked up, and she met his eyes at last.

The boy's head jerked up at the sound of his name.

His head jerked up to look at me, eyes clear and hard.

I jerked up and looked straight into my father's face.