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प्रश्न
How do the salivary glands come to know that there is food in the mouth and it is time to secrete saliva?
उत्तर
Through the nerves present in the mouth, the brain comes to know that there is food in the mouth. The brain then gives orders to the salivary glands to secret the saliva. Thus when there is food in the mouth, automatic secretion of saliva takes place.
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संबंधित प्रश्न
Put a tick (✓) against the most appropriate alternative in the following statement.
Saliva converts starch into:
Define the following term:
Egestion
Fill in the blanks.
Removal of undigested food is called ________.
Write true or false for the below statement. Rewrite the false statements correctly.
Absorption of food takes place in small intestine
What makes respiration and blood circulation go on all the time, and the processes of digestion happen at the right time?
Analogy
Enzymes: Digestive glands:: _______: Endocrine glands.
______ is the common passage of air and food.
Match the two columns and select correct option.
| Column - I | Column - II | ||
| i. | Sphincter of Oddi | a. | Oesophagus and stomach |
| ii. |
Ileo-caecal sphincter |
b. | Stomach and small intestine |
| iii. | Pyloric sphincter | c | Ileum and caecum |
| iv. |
Gastro-oesophageal sphincter |
d. | Opening of hepato- pancreatic duct |
In which part of the alimentary canal food is finally digested?
The following statements describe the five steps in animal nutrition. Read each statement and give one word for each statement. Write the terms that describe each process.
Breaking of complex food substances into simpler and soluble substances.
