Lab is a lot of looking at models and dissection. At least at my school, that's where the majority of our anatomy knowledge is tested. Yes, there are still anatomy questions in lecture, but more or less lab is the hands on learning of anatomy. You also get to practice microscope knowledge, and identifying things through a microscope. Oh and lab reports and lab drawings...at least at my school!
Like everyone else said, be at class. That's the first step in succeeding. My next piece of advice, just because you are there doesn't mean you are present. There are so many people in my class who complained because of their grade, while they slept through class. Be prepared for class, find out what materials you learn best with and use them! The anatomy flash cards didn't work for me, but coloring did. I know people who did the exact opposite and did well too. It's all about your learning style. Another thing, YouTube. There are so many lectures and tricks I used from YouTube, to help comprehend the difficult stuff.
Our school has a packet of pretyped notes you can purchase. They are great! My school also has course information and study sheets available at our course online site. If you can answer and comprehend all of those questions you can do well. See what tools your school has in place, and USE them!