Do you have a Makro near you? I know that they sell the posters along with the all the other posters they sell.
Also some of those stationer type shops that sell posters have the same charts. You can get one with the skeleton, and another with the muscles. Both were very helpful to me when I was doing A&P - I had them pinned up in my kitchen for constant reference!
They were not too expensive - around £5 each.
(Don't know where you live, but Eastcote near Ruislip. middlesex is the shop I got mine from......!!)