Your Q. seems to be, what exactly will be on the TEAS, when (I) sit down to take it? Just tell me that, so I can get 100%.
Sorry, I have no sympathy for you. Nor will the TEAS, nor ATI.
The TEAS, you will (or may) discover, will have the questions it will have; trying to predict them in advance is likely to be less than fruitful. If you wish (as you ask) to know ALL that will be on the exam, i suggest that you take the exam, several times, perhaps many times. You could become expert about just what is on the exam (or, actually, what was on the exam, each time you took it).
I would suggest you have a look at the ATI Study Guide. Actually, I would suggest you INTERNALIZE everything in it, cover to cover. Or, alternatively, study (really STUDY) everything you ever were exposed to in A&P, Microbiology, and college Algebra--as a start.
Another alternative could be 40 or 50 years of life experience, plus the above-mentioned college courses.
You're anxious about a test you may take some time in the next 3 months, about which you seem to know nothing? Ease your anxiety. Plan to take it sometime in the next 12 months, and you can be serene for 9 months or so.