MA Externship in a dialysis center

I just finished my class work for MA and I am now getting ready for my externship. I will be completing 160 hours in a dialysis center. I'm wondering what a MA would do in a dialysis center? I'm very excited and nervous too. I have been studying dialysis for the past two weeks. I understand a lot about dialysis, but curious to know what I will most likely be doing when I get there. Any help would be greatly appreciated.