If your personality cannot feel comfortable by all the unknowns of vocal gesture (it is so complex and internally related with so many structures that in really long time we will be able to explain and visualise it correctly) and simply accept of being able of correct and effective gesture and choices, then go and choose explanations and images that you find logical or simply that fit for you.

But, there are two FUNDAMENTALS but.

First: do not think that your explanation is reality. Perhaps it will be proved that it is, but you cannot know till proved, and to be proved is not fundamental for the purpose of relaxing the part not satisfied of remaining in the incertitude that pushed you to the search for explanation. Your explanation is built for you and to sing without the anxiety and struggle of some characters in accepting the existence of unknown, remember and accept and love this, and perhaps you could also find some things true in your way of explaining it.

Second: your visualisation and explanations must be built with the logic of the voice, with that specific way of thinking that is unavoidable for a lasting and correct voice gesture. If you do not follow this point you will start losing part of the vocal gesture, not a good idea if your purpose is to sing and not to look at the voice from outside without reaching it.