The application is about you, not about them. Concentrate on your interests and your motivations. Sure, your family is important to you, but would the son of an accountant bring their parent's occupation up at any length? It certainly didn't come up in my interviews.
The adcom will want to know why you want to go into medicine. The answer to that question shouldn't imply that some sort of pressure from your family played a significant role. Their experience can be an important advantage as far as opportunities go, but the motivation for your career choice should very clearly be your own. The answer to this question is probably the single most important piece of information gleaned from an interview.
P.S. The second most important question would be "Why our school?"