My situation was kind of similar to yours. I think schools look at the grade as a whole. So I think it would be to your benefit (if you have time) to retake the course at a local community college and boost that grade up. Cause if you think about it I think the only way they consider two different grades is by averaging it. I remember I had a B in Physiology lecture and C in lab, but when I asked an admin rep, they told me they averaged the two and assessed the class as one, which brought down my grade overall. As anatomy is an important pre-req they consider I think it would be in your best interest to take it again.