Parasympathetic supply

• Parasympathetic nerves that supply the oesophagus, stomach, small intestine, ascending colon, liver, gall bladder and pancrease arise from the medulla and conducted through the vagus nerve.
• Parasympathetic nerves to the rest of the colon arise in sacral spinal cord and conducted through the pelvic nerves.
• In general stimulatory

• arise in the spinal cord
• Postganglionic fibres from the prevertebral ganglia innervate the GI tract.
• In general inhibitory