I generally spend 22 hours a week studying (3rd Year). This is on top of the clinical and academic timetable activites. Clinical activities vary, but for example, on ED week (just done), we were in 9-4 on Thursday and 8-1 on Friday. Academic day is every week, and consists of tutorials and clinical skills that are generally 9-5.
During the couple of weeks run up to exams, however, I may up my time studying to 33 hours. This is also true if we have an essay week.