This document discusses the field of hospital sociology. It notes that modern hospitals are complex social systems with many goals, staff, and divisions of labor. Hospitals have evolved from charitable institutions to centers for active medical treatment and teaching. They function as hotels, schools, laboratories, and treatment centers. The administrative structure tries to manage conflicts between staff. Hospitals also represent class divisions. Each hospital has its own culture and community it serves. The document then discusses various roles within hospitals like doctors, nurses, medical social workers, and the sociological study of hospitals.