Question

the secretion of stomach wall can digest even hard bones how does the digestive tract protect the stomach from these secretion explain basis of any experiment​

Answer 1

there are two mechanism by which the stomach wall is prevented from getting damaged by the hydrochloric acid  

Explanation:

• firstly there are goblet cells which are present in the digestive tract. The goblet cells secrete mucus.
• the mucus due to its density gradient forms a layer between the hydrochloric acid the enzymes and the mucosa of the digestive system , as a result of this there is retention of control and digestion of the digestive tract itself. In addition to this there are also bicarbonate ion present in the mucosa which neutralizes any hydrochloric acid that comes in contact

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