Not trying to scare you off, but it sounds like this lady is trying to prepare you for nursing school
. Most of the stuff you just discussed happened to us our first semester of nursing school.
In order to succeed you have to have a sponge brain and VERY thick skin. Stick with it, study your butt off, and do the very best you can. I only wish my A&P instructor had not been so nice. I was in NO way prepared for what was ahead of me in the nursing program. And get used to teaching yourself this stuff!!! Our nursing instructors told us 1st day that they are class room facilitators not teachers. They provide the information you need to pass, but do not hold themselves at all responsible for teaching it to you!
I know this sounds very negative, but at the CC I attend it's the way it is. And from what I have read here, it's that way in most ADN programs. There is only so much that can be squeezed into 4 semesters and believe me, they cram in everything they can as fast as they can!!!
Hang in there, remember it's only a few weeks. Good thing about A&P is you can memorize all that stuff!!! Not much critical thinking involved.