RT Book, Section A1 Ved, Sudha A2 Freeman, Brian S. A2 Berger, Jeffrey S. SR Print(0) ID 1102566051 T1 Circle and Noncircle Systems T2 Anesthesiology Core Review: Part One Basic Exam YR 2014 FD 2014 PB McGraw-Hill Education PP New York, NY SN 9780071821377 LK accessanesthesiology.mhmedical.com/content.aspx?aid=1102566051 RD 2024/03/28 AB An anesthesia breathing circuit is a system of tubing, reservoir bag, and valves used to deliver a precise mixture of oxygen and anesthetic gases from the anesthesia machine to the patient and removal of carbon dioxide. Breathing systems may be best classified in a number of different ways: