Digestive secretions are secreted only when needed. Discuss

Dear Student.

Digestion is a very complex process involving the breakdown og proteins, carbohydrates, fats etc into simpler molecules. It is started from the buccal cavity itself. Though saliva is secreted all the time but it is only gets activated from one starts consuming food. Similarly, digestive enzymes are not secreted all the time, when any food particle enters into te gut. The process of secretions gets initiated. But the liver keeps on secreting bile even if there is no food.

Hope this information will clear your doubts about the topic.

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