I am currently working on Chapter 4 in my medical terminology in-depth study.  The suffixes and prefixes become more detailed in the different body parts.  What becomes more challenging for me is that when the body parts are seperated into , further branches (e.g arm – hand – finger – nail), the more confusing the terminology gets.  Sometimes when I am practicing on the worksheets, I have ponder a bit more and check over again and again to ensure that the prefix or the suffix is correct.