I took a medical terminology test for a clerical position but it has been many years ago. I cannot remember, but I believe it was multiple choice. Just remember, most questions you will get correct if you can learn how to break the word apart. If you can get a book on medical word roots, suffixes, and prefixes, or look online, that would be your best bet. For a clerical position, I would not imagine it would be too difficult. You will need to know things like:
itis=inflammation (as in hepatitis which is inflammation of the liver)
dys= bad or difficult (as in dyspnea which is difficult breathing)
rrhea= discharge (as in diarrhea)
eryth = red
edema = swelling
oma = tumor
There are many links online. Just study the easier ones and you will probably be fine. Here is a link for example: http://ec.hku.hk/mt/suffix1a.htm
There are tons of sites on the internet where you can look up basic word roots, suffixes, and prefixes.
Your key is learning to break words apart. For example:
cholecystectomy. This is surgical removal of the gallbladder.
chole= (bile, gall) cyst=(bladder) ectomy= surgical excision or removal
Hope this helps a little bit. Good luck!