Yep, there is a follow up mechanism. You move the control column, the valve opens, the jack moves the surface, the surface moves the follow up mechanism until it's position matches the input, the valve closes.
Although I'm not sure why you've been pondering this. Has life been so dull recently with all that time off?
But remember, on your new jet, if there's no yellow writing on the screen - there's nothing to worry about. There's no prizes for getting creative with the checks!