A small amount of hydrochloric acid is always produced in the stomach
a.how is it useful
b.state the role of the mucus lining in stomach
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1) hydrochloric acid (HCl) is an acid which is realesed by the glands in the stomach which makes the stomach acidic in nature so pepsin can break down the protiens (pepsin only works on acidic substances)
2) and when HCL is released it damages the inner linings of the stomach since its a very strong acid, but Mucus protects and prevents this from happening
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