The basis of pharmacology is what, exactly? That's right, organic chemistry and then by default, biochemistry.
Now you can argue that being able to drop a NG tube, learning how to roll an intubated patient in order to give them a bed bath, and knowing how to review the VS history on the monitor at the end of the shift [in order to document that you looked at it each hour] is all part of a the vital foundation necessary to provide midlevel anesthesia, but I'm going to have to go ahead and postulate that actually knowing how and why the drugs you give actually work is just a tad more important.
Now I know that making up care plans is of paramount importance to providing midlevel anesthesia, but please consider for just a minute that possibly having a greater understanding of human physiology and cellular biology might be just a little more important...you know, so you can actually understand why anesthesia drugs work in different parts of the body and how those mechanisms interact to affect the patient as a whole.
I know it sounds crazy, knowing the drugs you push beyond the basic flashcards you made in nursing school just might be a little more important than knowing how to put in an IV in the antecubital.
But hey, if you would rather focus on knowing mundane procedures instead of knowing how the body and drugs actually work, then there is no shame in being just a technician like most nurses.