I'm actually an LNA instructor...Most states are CNA (certified nursing assistant), and the state I'm in they're considered licensed (so they're called LNAs)....meaning they come up before the board for discipline. The main responsibility of nursing assistants is to assist the patient with their basic needs and activities of daily living. Depending on the facility they end up working in, you could end up with other responsibilities also (i.e. EKGs, blood glucose, vital signs, phlebotomy, etc.). Hope this helps a little!