This document outlines the roles and responsibilities of various members of the surgical team in an operating theatre, including the patient, surgeon, anesthesiologist, operation room nurses, and others. It describes in detail the key roles of scrub nurses and circulating nurses. Scrub nurses are responsible for preparing instruments and supplies for surgery and passing them to the surgeon during procedures. Circulating nurses assist with preparing the operating room and patient, and ensure the safe functioning of equipment during operations. Both roles require strict adherence to aseptic technique and protocols to maintain a safe environment for surgical procedures.