User blog comment:Goregutz619/HXH episode 101 discussion/@comment-5495439-20131024005932/@comment-4783583-20131030124758

to speak you need breath air or to be precise breath oxygen and you obviously can't do anything without breathing because if you stop breathing long enough you die. So yes you do use your lungs in a sense but your vocal cords is were all the magic happens to put it like that. And like hahaharuhi's link explains you also need your tongue, lips and mouth to articulate however there are a few languages know as guttural language that use almost no articulation. Remember your body has evolved to become a working system that is very intricate and complex but also extremely flawed and insufficient and prone to all kinds of diseases, disabilities and other ineptitudes. One example of this is the part of your body between your legs and belly which is basically a waist disposal plant which has been partially built through an amusement park. Another one is your eye which is like a camera with all the wiring put in front of the lens in stead of being put besides it.