Concept of digestion in the stomach, Biology

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Digestion in the Stomach

To understand  the digestion mechanism  in the stomach, it is important to know about the anatomy of the stomach. Look up Unit 6, in the Applied Physiology Course. You would  notice that  the  stomach  is a  'J'  shaped organ and secretes  gastric juice.  The major  components  of  gastric juice  are hydrochloric acid  and  the  enzyme pepsin, which  is  secreted  in  an inactive  form called pepsinogen.  Small amount of  lipase  is also  produced  but  remains inactive because  of  the acidic  nature  of  gastric juice. Rennin  is present only  in  infants and helps  in  the digestion of milk protein  'casein'.

 


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