To get the UV's out to photoshop what you need to do is to select the UVs in parts so you know which ones are what, like the head for example, then select a colour in MED and apply the colour to the UV and so on.

When you have given colours to all UV componants, export that out and you will have exactly those colours to apply your texture base on so you will know which should be flesh, which should coat or pants etc by the colours you chose for them.