Meta, Normative, Applied, and Whatever else

When you look at ethics in the professional world, what comes to mind first? Is it what constitutes as professional? Is it what are ethics? Where did ethics come from? What do professional ethics focus on? Or why are ethics so important?
First of all, lets start with what ethics are... Ethics are a set of standards that people around the world set aside as knowing what is right and what is wrong. A professional is vaguely defined as someone in the working force with power over other people, such as a CEO, or a person working in the medical field, legal field, Military, scientific field, government field, etc... So if you put the two words together (Ethics and Professionals), then you get the term Professional Ethics, and it is vaguely the set of standards that define right and wrong in the professional world.
However, the question is still posed, where did ethics come from? That is where Meta-ethics, Normative ethics, and Applied ethics come into play. In brief, meta-ethics is the study of the source of ethics. Meta-ethics explores many possibilities as to where ethics are derived from. Normative ethics is built off of meta-ethics as the set of standards people follow in order to do good in their life, or create the perfect world. This set of standards and the source of ethics in both normative and meta-ethics are the base for applied ethics, which is used while looking at professional ethics. As I go on about this over the next several weeks, I will be looking at numerous topics relating to professional ethics and exploring whether it is ethical.
Look for the next post, exploring animal experimentation.