Omg so much harder than I thought

I taught AP Bio for 10 years and this class will be the death of me. I have a solid 85% in the class but I can’t get it up. It’s all on me, but my brain keeps calling me an idiot because I should have an A. But it is like, the muscles killed me. Oh this little muscle? It’s obviously X, nawww we were pointing to this little spot behind that muscle! Bones were fine, nerves….don’t get me started. A big problem is I make up names for things (I know I know, but it is how I remember crap) with little songs, but my brain doesn’t want to remember is this major or minor? And plus my diagrams don’t match the dissected model. The models are all just beige grime grossness. Last quiz we had to label the ass. The diagrams we got in class were not the ones on the test and I’m just poking at this digital ass trying to find his internal sphincter. Oh surprise!! It was this tiny little smudge that I thought was just dust on my screen or just the diagram being pixilated. I have a major test tomorrow on 5 chapters and it’s all gummy in my mind. I don’t know if my brain can retain all this info. Like the stuff I taught in AP Bio I know, no biggie, but it’s all this minute details. I’m a ehhh close enough to the source type of a person. Rant over