My A&P class is very hard too. I have heard that when the instructor makes it hard, it can be harder than all of the nursing classes. I just keep plugging away, since I know I am going to really need this stuff. Here is what I do to make it easier:
*read ahead before lecture
*review my notes within 1 hour of class
*peer tutoring (kind of like a group study type thing)
I also visit a LOT of a&p websites and do all of their activities they offer. Someone posted some great A&P links that really helped me last night. Just do the best you can -- that's all you can do.
It sounds as if you are ahead of our class, are you in A&P II? We are only up to the neuron, our test is Tuesday. I have two children and I am married and I frequently feel so guilty for neglecting them for this class (I spend A LOT of time studying), but then I think how it's all for the greater good and we all need to sacrifice a little because in the long run, it'll all be so worth it.
I am sorry if I am rambling, I just wanted to let you know that you are not alone and the class really IS that hard. I am sorry you are having a hard time with it, ut I am honestly glad to hear of another person that thinks this class is impossible.
ps my instructor has us know everything to the last detail -- everything has to go down to the cell level and back up again, it's so hard to keep it all stright!