Making a transition from biology into robotics

So, I would like to pursue a masters degree in engineering. I am specifically interested in robotics, such as robotic prosthetics. The problem is that I am currently a college junior about to get my B.A. in biology. Do robotics fall more into mechanical engineering? I am currently in a calculus class and I signed up for physics. My school doesn't offer a program for any sort of engineering, so is there any way I can prepare to make this transition?
posted by Megan, United States on October 31, 2013