Hey all,
I'm not usually in this forum since I'm a PT student, but with all the craziness going on in some of the threads, and since I'm an asst mod for this forum, I've been lurking over here from time to time 😛
Anyway, this is a big topic over on the PT boards as well, because gross is definitely the most overwhelming class first year DPT students take. The vast majority of us who have gone through it agree - don't review too much before school:
First, you want to enjoy what free time you have left. I'm not sure how OT's first year compares to a PT's first year, but we're in class 40 hours/week from the get-go, so most of us want to take that last summer/spring to relax and mentally prepare ourselves.
Second, every professor teaches anatomy differently, meaning that what Prof. Smith at the PT/OT/Med school wants you to memorize as the origin/insertion will be slightly different than what Prof. Johnson wanted you to memorize in undergrad, or at a different PT/OT/med school. Therefore, spending a bunch of time memorizing those aren't a great idea.
However, if you do want to review a bit, focus on the big picture....become familiar with muscle names and where they are, the major things they do (again, some books/professors will say certain muscles might assist with abduction, others say they're purely flex, so only focus on the main actions that everyone agrees on). You could also learn the basics of the brachial plexus (and learn how to DRAW it, at least up through the branches...you'll need to be able to draw it on exams to trace it in lab and on written exams).
Good luck in school!