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(biologia) (anatomia) (fisiologia) (medicina) segmento dell'intestino tenue che unisce lo stomaco al digiuno, che riceve la bile dal dotto coledoco e il succo pancreatico dal condotto del pancreas, per emulsionare i grassi e scomporre proteine e zuccheri nei loro monomeri
dal latinoduodeni che deriva duodecim ossia "dodici" perché nell'uomo è lungo circa dodici pollici, ovvero circa trenta centimetri; calco del greco tardo δωδεκα-δάκτυλος, appunto "dodici dita"
approfondimento) m sing (pl.: duodeni)
