Look at a local RN program's prerequisites for entry into their program. You should take those courses, not because you want to become a Nurse, rather those classes make for a good foundation for you to more easily learn the material you'll get in your Paramedic Program. After you take A&P (full year), look for a pathophysiology course and take it if it's available. You'll gain a good understanding of what the body does when something goes wrong. Also you'll want to take a microbiology course as that'll give you a much better idea of what bugs are out there and how they're dealt with. A medical terminology course isn't a bad idea, but wait until after you've got a few other courses under your belt. A medical terminology course can end up being a good review because the words you learn have specific meanings and since you'll know the body already, it should be much easier to learn the language.