Question

list the role of each of the following in our digestive system a)muscles of stomach wall b)hydrochloric acid c)mucus

Answer 1

Muscles of the stomach helps in the contraction and relaxation of stomach due ti the movement of food inside or outside the stomach .
Hcl or hydrochloric acid helps in regulating acidity levels of food, it converts pepsinogen to pepsin, it kills the bacterias in tge food
Mucus is a sticky and thick fluid which is present in tge lining of The stomach walls. As HCl is very strong and acidic , mucus helps in tge protection of stomach walls from that very acidic fluid HCl
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Answer 2

Explanation:

a). Different components in the gastric juice , secreted by the glands in the stomach wall also play an important role in the process of digestion.The strong peristalsis in the stomach converts food into a paste form. The special circular muscles present in the prosterior part of the stomach retain food for a specific period.

b). HCL destroy germs in the food and also regulates pH suitable for the digestion in the stomach.

c). Mucus protects the stomach wall from the actions of digestive juices.

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