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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
The process of digestion in humans is completed in:
(a) oesophagus
(b) small intestine
(c) stomach
(d) large intestine
Where does digestion of fat take place in our body?
What are the main characteristics of enzyme?
Complete the following table by filling in the blanks 1 to 8.
|
Organ |
Enzyme |
Food acted upon |
Find product |
|
1 |
Pepsin |
2 |
3 |
| Mouth | 4 | 5 | Disaccharide |
|
6 |
7 |
Maltose |
8 |
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The temporary set of teeth includes incisors, canines, and premolars only.
State whether the following statement is True or False.
The ducts from the salivary glands open into the duodenum.
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