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प्रश्न
The process of digestion starts from the ______.
विकल्प
stomach
mouth
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उत्तर
The process of digestion starts from the mouth.
Explanation:
The digestive system consists of the alimentary canal and digestive glands. The total length of alimentary canal is about 9 metres. Its main parts are the · mouth, ·pharynx, oesophagus, stomach, small intestine, large intestine, rectum and anus. The salivary glands, liver and pancreas are the · digestive glands connected to the alimentary canal.
संबंधित प्रश्न
Draw neat labelled diagram of the pancreas with their associated structures
Where is digested food absorbed into blood in human body?
Where are proteins first digested in the alimentary canal?
(a) small intestine
(b) oesophagus
(c) mouth
(d) stomach
When a person eats sugary food, then organisms A present in his mouth act on sugar to produce a substance B. The substance B first dissolves the calcium salts from the top part C of the tooth and then from its middle part D forming holes E. These holes ultimately reach the part F in the lower part of tooth which contains nerves and blood vessels. The substance B irritates the nerve endings inside the tooth causing toothache.
(a) What are (i) organisms A, and (ii) substance B?
(b) What are (i) part C, and (ii) part D, of tooth known as?
(c) By what name are the holes E in the tooth known?
(d) Name the part F of the tooth.
(e) What will happen if organisms A reach part F of the tooth known?
Write true or false for the below statement. Rewrite the false statements correctly
Pancreatic juice does not contain any enzyme.
Mark odd one in the series:
Digestion of starch begins in the ______.
Name the organism which lives in the digestive system of human ______.
What causes movement of food inside the alimentary canal?
Write the chemical name and Molecular formula of tooth enamel.
