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प्रश्न
Answer in detail.
You had eaten bread in the morning. Starting from the mouth, explain how it is digested?
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उत्तर
Bread contains starch. The digestion of starch starts in the mouth. When we chew the bread, saliva gets mixed with it. It softens the food. Saliva is secreted by salivary glands. Saliva contains the enzyme salivary amylase (ptyalin) which acts on starch to convert it into maltose
starch \[\ce{->[salivary][amylase]}\] maltose.
After chewing, the food is swallowed into the pharynx. No further digestion takes place in the pharynx. From here the food moves in to the oesophagus, by peristaltic movements it is pushed in to the alimentary canal. In the small intestine (duodenum) rest of the starch is broken down into smaller units by pancreatic amylase. Further Maltose is changed into glucose by maltose in the small intestine (ileum).
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संबंधित प्रश्न
Which part of the digestive canal is involved in:
Chewing of food ______.
What is the special name of the contraction and expansion movement which pushes the food further in our digestive tract (or alimentary canal)?
Define the following term :
Pylorus
Give two reasons to explain why the absorption of digested food occurs mainly in the small intestine.
Fill in the blank.
The _______ are used for tearing the food.
Fill in the blank.
In an adult human, there are a total of ___ teeth.
What do you mean by the absorption of food?
Write true or false for the below statement. Rewrite the false statements correctly.
The process of taking in food is called assimilation
A gland not associated with the alimentary canal is ____________.
Name the organism which lives in the digestive system of human ______.
