The purpose of this session is to make students start understanding of principal moral values governing medical ethics. It should subsequently develop awareness of frequent existence of ethical issues and dilemmas help develop the capacity for resolution of these issues through ethical reasoning and acquire understanding of the function of institutional bodies concerned with ethics. Ethics has ever widening scope these days. Ethics is a discipline dealing with what is good and bad and with moral duty and obligation, a set of moral principles or values, and a theory or system of moral values. Ethics is the study of right conduct and a rational process for determining the best course of action in the face of conflicting choices. Medical ethics is the science of moral values that guides a medical practitioner in their relationship with their patients, the state and professional brethren. It also includes ethical issues associated with providing health care or perusing biomedical research. Autonomy of patients, beneficence, nonmaleficence, and justice are four essential principles of ethics.