To anyone in their first semester/going to be starting med school soon, reading this in the future: there are clearly different schools of thought on how much you should master anatomy, and there's no resounding champion (no matter what some may think). Some people say "if you don't know all the anatomy, you'll be a terrible doctor!" while some say "know the testable stuff and you'll pick up on what's most important to your specialty as time goes on". Then there's the in between.
The point is, no matter which camp you're in, rote memorizer or conceptual learner, you can do fine in anatomy and move on. We've had guest lecturers come in and say "I don't know or care about the brachioradialis because I'm not in Ortho." I like those guys. Because at the end of the day, if it's not important to your field, you CAN (but don't have to) not care about it and be fine.
TL;DR: A lot of people prognosticate about the quality of physician one will become based on how they do in a class or two. They're wrong. There are few things I hate more than some 22-year old in my class telling me about "the real world" and what it'll be like being a physician.