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प्रश्न
Define the following term :
Pylorus
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उत्तर
Pylorus is the passage at the lower end of the stomach that opens into the duodenum.
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संबंधित प्रश्न
The tongue helps in mixing food with saliva.
Draw a labelled diagram of the human digestive system. With the help of this diagram, describe the process of digestion of food in man (humans).
The process of digestion of food in humans begins in ______.
Which of the following component of our food is digested by an enzyme which is present in saliva as well as in pancreatic juice?
| 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. |
- What are (i) organisms A, and (ii) substance B?
- What are (i) part C, and (ii) part D, of tooth known as?
- By what name are the holes E in the tooth known?
- Name the part F of the tooth.
- What will happen if organisms A reach part F of the tooth known?
| When a person puts food in his mouth, then teeth cut it into small pieces, chew and grind it. The glands A in the mouth secrete a substance B which is mixed with the food by tongue. The substance B contains an enzyme C which starts the digestion of food in the mouth. The slightly digested food from the mouth goes down a tube D. The special type of movements E in the walls of tube D push the food into stomach for further digestion. The stomach wall secretes gastric juice containing three substance F, G and H. One of the functions of F is to kill bacteria which may enter the stomach with food. The substance G protects the inside layer of stomach from the damaging effect of substance F whereas substance H is and enzyme for digestion. The partially digested food then enters into small intestine for further digestion. |
- What are (i) gland A, (ii) substance B, and (iii) enzyme C?
- Name the tube D.
- What is the movement E known as?
- What are (i) F, (ii) G, and (iii) H?
Prepare a possible vegetarian menu for your dinner which would provide all the necessary nutrients.
Give two reasons to explain why the absorption of digested food occurs mainly in the small intestine.
Write four sequential steps of the procedure of the experiment "Preparing a temporary mount of a leaf peel to show stomata".
Fill in the blank.
The teeth called ______ are a total of four in number on the sides of incisors
Fill in the blanks.
Incisors are used for _____ and _____ the food.
Name the organ where the juice bile is temporarily stored.
Define the term nutrition.
Complete the following enzymatic reaction.
Fats \[\ce{->[lipase]}\] ___________+__________
Answer in detail.
What is meant by digestion? How does it differ from nutrition?
Answer in detail.
You had eaten bread in the morning. Starting from the mouth, explain how it is digested?
State whether the following statements are True or false: Pancreatic amylase digests protein into amino acids.
The process by which the body removes waste is called ______.
The other name of food pipe is alimentary canal.
Name the parts of the alimentary canal where water gets absorbed from undigested food.
