Capetonian - SWMBO does much body work and she has charts by Heinz-Harro Rüdiger. They are excellent charts. She has the laminated ones and they're available in English.
I've never seen an "exploded" chart of the human body that is the equivalent of the automotive variety. Possibly because we are put together a little differently to cars.
The muscles overlie each other in a dozen different directions, and one has to have a "peeled back" view.
Rüdiger.de Muskel System charts