RT Book, Section A1 Rema, Elvis W. A2 Freeman, Brian S. A2 Berger, Jeffrey S. SR Print(0) ID 1102568853 T1 Pain Mechanisms and Pathways 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=1102568853 RD 2024/04/24 AB Pain serves an important role in providing essential protective mechanisms against injury. The International Association for the Study of Pain defines pain as “an unpleasant sensory and emotional experience associated with actual or potential tissue damage, or described in terms of such damage.” This definition infers that pain has both sensory as well as affective and cognitive consequences.