If you learn any material art you'll be force to "key up" (is that even how you spell it?) when you do a punch or kick. "Key up" is suppose to force you to breath out when you attack and thus regulate your body with your breathing effectively;I'm guess the jutsu naming thing is something similar .... or it's just for your viewing pleasure.

Seriously, it doesn't really matter, don't think too deep or your brain will fry.