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प्रश्न
Observe the diagram given alongside and answer the following:
- Name the parts numbered 1-8.
- Which parts shown in the diagram are non-living?
- Is the tooth suited for cutting, tearing or grinding?
- What is the function of parts 8 and 7?
- What is the total number of teeth present in adult human beings?
- Write the dental formula of human beings.
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उत्तर
- 1. Enamel; 2. Dentine; 3. Blood capillaries; 4. Cement; 5. Blood vessels; 6. Periodontal membrane; 7. crown and 8. root.
- Enamel, dentine and cement
- Yes
- The function of the root is to hold the teeth in the jaw and the function of the crown is it completely encircles and protects the teeth.
- 32
- The dental formula of humans is 12/2, C 1/1, P 2/2, M 3/3 (16x2= 32).
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संबंधित प्रश्न
Fill in the blank and rewrite the completed statement:
.................... is the largest gland in the body.
What is the function of digestive enzymes?
Which part of the digestive canal is involved in:
Chewing of food ______.
Fill in the blanks in the table (1-5) by selecting the suitable names of substances from the list given below:
(steapsin, peptones, fatty acids, proteoses, protein).
| Digestive Enzymes | Acts on | To convert into |
| (i) Pepsin | _________(2) | ________(3) and |
| (ii) _______(1) | Fats |
________(4) _________(5) |
Correct the spellings: Pespin
Circle the odd one.
______ is the common passage of air and food.
Liver produces for ______ the digestion of fat.
What is the significance of the emulsification of fats?
Given below are two columns, Column I shows enzymes secreted by the glands in the alimentary canal of human beings and Column II indicates the components of food on which enzymes act. Choose the options showing correct matching:
