This document provides an overview of the nurse's role in the healthcare system. It defines key terms like nursing, nurse, and nursing practice. It describes the philosophy of nursing as respecting patient dignity and treating each person as an individual. The nurse's roles include caregiving, advocacy, education, research, and management. Healthcare is organized at national, hospital, and community levels. Hospitals are organized into levels that provide different services. Community health involves health centers, posts, and organizations that work together to promote health. The nurse collaborates as part of a multidisciplinary team that includes doctors, pharmacists, and others to provide comprehensive patient care.