In order to meet the demands of these specialties, Islamic hospitals were subdivided into departments for surgery, ophthalmology, orthopedics, mental illness, and systemic diseases. The systemic disease department was designated for general illnesses that did not fall into categories of other departments. In some hospitals, they were further divided into subsections to address the needs of the patient depending on the symptoms. Examples include, but are not limited to, infections, fevers, and digestive issues. Hospital staff was not limited to physicians. Much like today's hospitals, they also relied on pharmacists, nurses, sanitary inspectors, supervising specialists, secretaries, and superintendents. The superintendents, or in Arabic, sa'ur, ensured that hospitals met certain standards in addition to managing the entire hospital institution. Pharmacists produced drugs as means for treatment of the hospitals' patients; they relied on a knowledge of chemistry, or Alchemia.