Desperately trying

I agree with the first commenter. When I took, A&P I, my instructor covered so much information at once, but always emphasized what information would be likely seen on the exam. He also provided diagrams of processes so that we could study the lecture notes and try to get a visual of the processes emphasized in lecture. It is a lot of information so spend as much time out of class reviewing and studying as you do in class. I would also request an appointment with the instructor and go over you understanding of the material and ask for feedback to see if you are on the right track. Hopefully this helps!