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प्रश्न
Fill in the blank.
The human teeth appear in two sets, the first set is called primary which consists of only _______ teeth
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उत्तर
The human teeth appear in two sets, the first set is called primary which consists of only twenty teeth
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संबंधित प्रश्न
Label the following figure of the digestive system.
A part of the human digestive system
Which of the organs perform the functions in humans Absorption of food?
What is meant by dental caries? How are they caused?
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.
(a) What is (i) gland A (ii) substance B, and (iii) enzyme C?
(b) Name the tube D.
(c) What is the movement E known as?
(d) What are (i) F (ii) G, and (iii) H?
What is the function of rectum?
Write short answers
Write the names of three enzymes which are found in pancreatic juice.
What do you mean by nutrition?
Write down the explanation.
Explain the structure of tooth.
The common bile duct and pancreatic form ______.
Match the following:
| 1. | Pancreatic juice | a. | Breaking starch |
| 2. | Salivary enzymes | b. | Digestive enzymes |
| 3. | Salivary gland | c. | Alimentary canal |
| 4. | Digestive tract | d. | Parotid |
