This document discusses key concepts in medical ethics including laws, ethics, bioethics, and philosophical principles that guide the field. It also addresses codes of ethics from professional organizations and expectations of professionalism for medical assistants. Some topics that can present ethical issues are access to care, informed consent, confidentiality, advance directives, abortion, and physician-assisted suicide. Professionalism in the workplace involves exhibiting courteous, conscientious, and business-like behavior as well as maintaining confidentiality, loyalty, dependability, and compassion for patients.