A question I'm often asked by students is, "Is pre-algebra really that much different than algebra?"
Honestly, it's not too much different, but it lays a lot of foundation for longer, and often more complex formulas and equations. If you're part of the younger crowd or looking to refresh concepts long lost, I definitely suggest starting with basics.
Many of my students have asked me "How do you memorize so many things in such a short amount of time? How do you study for a class like this? How do you make sense of it?"
When building anything, a washing machine, for example, you first have to know what things like nuts and bolts are in order to put it together. With anatomy, it's much of the same. I always tell my students that it's easier to learn larger systems if you can understand the tissues that make them up, so start small, and work toward larger. I personally like to include a little bit (or a lot, if you need it) of physiology with the anatomy, because understanding how and why something is there, often helps you remember what that structure is.
Have you always struggled with math and found it embarrassing to ask for help? Or you do ask for help and don't understand the explanation and are too afraid to ask for further clarification?
I totally understand that some people don't have "math brain" and just can't catch on as easily as others. I have seen the struggle in students before. I've always tried to come up with different ways to explain the same concepts so that the student might understand it better. I don't judge those who need a little extra time, and firmly believe the best thing you can do is ask for help when you need it.