Visceral afferents refer to the sensory nerve fibers that transmit information from the internal organs to the central nervous system. These nerve fibers play a crucial role in regulating various bodily functions such as digestion, respiration, and heart rate. Some synonyms for visceral afferents include autonomic afferents, visceral sensory neurons, and viscero-somatic reflexes. The autonomic nervous system, which is responsible for regulating involuntary bodily processes, also encompasses many visceral afferents. Visceral afferents are involved in the transmission of pain signals, and conditions such as irritable bowel syndrome and chronic pelvic pain syndrome are associated with abnormal visceral afferent input. Understanding the role of these nerve fibers is important in the diagnosis and treatment of various health conditions.