Advertisements
Advertisements
प्रश्न
Answer in detail.
You had eaten bread in the morning. Starting from the mouth, explain how it is digested?
Advertisements
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).
APPEARS IN
संबंधित प्रश्न
Name the biological catalysts which bring about chemical digestion of food.
What is trypsin?
Where are proteins first digested in the alimentary canal?
Give two reasons to explain why the absorption of digested food occurs mainly in the small intestine.
Name the juice secreted by the liver.
Name the enzymes secreted by the following: Ileum
The question has four options. Choose the correct answer:
The organ that stores bile is
List out the functions of the digestive system.
Identify the INCORRECT statement.
A fluid containing the digestive enzyme ____________ is secreted by the serous cells of salivary gland.
