哺乳动物进食时食物尚未进入胃内就可引起胃液分泌称为头期胃液分泌.胃液中含有胃酸及胃蛋白酶有利于消化.该过程受神经调节和神经 体液调节的 Template




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tomski哺乳动物进食时食物尚未进入胃内就可引起胃液分泌称为头期胃液分泌.胃液中含有胃酸及胃蛋白酶有利于消化.该过程受神经调节和神经 体液调节的 coloring