Explain and analyze the functions of each essential role of the APRN.

 Please pay attention to the topic and questions. paper needs to be clinical based. include references.

The essential roles of the APRN include educator, researcher, expert, consultant, leader, and change agent.

Write a 200-word message in which you:

• 1. Explain and analyze the functions of each essential role. 
• 2. Identify the role that you perceive to be the most important and explain why.