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21.1 Overview The stomach is perhaps the most paradoxical organ of the gastrointestinal (GI) tract, accomplishing extensive and often rapid expansion to accommodate ingested food at low pressure in the proximal stomach while simultaneously generating propagating contractions in the distal…
14.1 Introduction The gastrointestinal (GI) tract is the only internal organ with its own nervous system, known as the enteric nervous system (ENS), which is concealed entirely within the gut wall and can function fully independently of any neural inputs…