What is the role of saliva in digestion? What reflexes provide salivation and under what conditions?

1) Saliva moistens food for easier swallowing, saliva lysozyme kills bacteria, saliva amylase breaks down starch.
2) The unconditioned reflex of salivation occurs when food enters the mouth.
3) The conditioned reflex of salivation occurs when the sight of food, the smell of food, the sounds of the dining room, when the time for a meal comes, when talking about food.

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