What is the visceral pain of acute abdomen?

V Mediated by afferent C fibers within the wall of hollow organs (intestine, colon, common bile duct…) and capsule of solid organs (liver, spleen, pancreas…). ● Elicited by: distention, inflammation, ischemia, contraction of smooth muscles (colic) or by direct involvement of sensory nerves. ● This pain is slow in onset, centrally perceived sensation, diffuse, poorly localized and protracted. Stimulation of C fibers → signals to the medullary center of pain →sensation of pain.