Last Year of College

I would have to say one of the most beneficial things to do in your last year in undergraduate is take some graduate level courses similar to medical school. Courses in medical school are usually very compressed into 12 weeks or less, and they would be easier if you had previous experience. Examples of good courses would be human based anatomy, embryology, physiology, biochemistry, histology, and neuroscience. Taking advanced courses would probably look good for your application proccess.