Autonomic nerves, like somatic nerves, contain afferent and efferent fibers.
2.
Finally the somatic nerve supply arises from the urethral sphincter motor neurons in the ventral horn of the sacral spinal cord; better known as Onuf s nucleus.
3.
Since the biliary tract is an internal organ, it has no somatic nerve supply, and biliary colic due to infection and inflammation of the biliary tract is not a somatic pain.
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