Digestive Glands


 
 
Concept Explanation
 

Digestive Glands

Digestive Glands:

Various glands associated with alimentary canal are:

  • Salivary glands: They secrete salivary amylase which convert starch into sugar at the optimum pH of about 7. It is due to this gland that our mouth waters when we eat something we like.
  • Gastric glands: These are found in the walls of the stomach. They release digestive juice containing HCl, pepsin, mucous etc. HCl creates an acidic medium of pH 2, facilitating the action of pepsin enzyme which acts on proteins present in food. The mucus protects the lining of the stomach from the action of the hydrochloric acid(HCl) produced under normal condition.
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    Sample Questions
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    Question : 1

    Which of the following are correct ?

    (a) Liver the largest gland secretes bile juice which acts on large fat molecules to form smaller globules increasing the efficiency of enzyme action.

    (b) Walls of small intestine contain various glands that secrete intestinal juices containing amylolytic, proteolytic and lipolytic enzymes.

    (c) Pancreas secrete pancreatic juice which contains enzymes like amylase, trypsin and lipase. This is connected to the small intestine through pancreatic duct.

    Right Option : D
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    Explanation
    Question : 2

    Salivary glands secrete ______________

    Right Option : A
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    Explanation
    Question : 3

    Bile is made in the _____________

    Right Option : C
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    Explanation
     
     
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