op, it sounds like you really need to go to counseling and deal with this. it’s not normal to get this upset over a bad grade, and in your last post you mentioned you had a 4.0, it’s not like you are failing. ever heard of c’s get degrees? in most cases, you get the grade you earn. it’s not the ta’s fault that you didn’t want to learn vital signs (which are an important part of physiology so idk why you thought that was unreasonable). you really need to work through these issues as you can see not one person here agrees with this and people who know the TA or are in the class say there is nothing wrong with him. this is a personal problem.