2007 impala part identification

So while changing the air filter, I broke a hard plastic pipe that went from the air intake hose to the back of the engine. Does anybody know the name of the hose and what it does. Haven't been able to find the name of it online. Thanks in advance.

its part of the emissions , crankcase ventilation. does it go to the valve cover? there are several Chevrolet dealers that you can search for parts online , I forgot the names I am on my laptop have them bookmarked on my desktop. I think the easiest might be to google something like "emissions tube 2007 impala " then click image after you search, then scroll down till you se an exploded view, try other parts.