Pharyngeal Resonance

The pharyngeal (throat) resonator is the area in your throat, back of your mouth and behind your nose.
It is an area at the back of the throat that connects the mouth to the nasal cavity in the head, where your head resonance takes place. So it functions a little bit like a conduit or go-between, between the two areas.

You can feel the pharyngeal resonator by saying "ng", like in "sing". It's not like any other resonator, it's more like an application to your chest, mix or head, therefore using the pharyngeal will aid you when you go from chest to head because the resonator is used in both.

To clear up, the pharyngeal is a resonator that is used in combination with your other resonators, it's not stand-alone like chest and head.

You can't really have pharyngeal resonance on its own. You will usually have head/pharyngeal, or mouth/pharyngeal, or head/mouth/pharyngeal. Obviously, a dose of pharyngeal resonance is a healthy component of any type of Mix, although depending on the sound you are after, you can have more or less of it.