What percent of the questions on the OAT would you say has some A/P? Do you think it's ok going in to take the OAT without having taking any A/P courses?
I would say general knowledge. In biology classes (1 and 2) you should have gone through a quick overview. I also know that the big Kaplan book goes over the systems pretty thoroughly. I wouldn't worry too much about details (such as naming bones and muscles) or knowing and differentiating different epithelia and histology. It's just basic systems and I would use the Kaplan book as a guide.