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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
Which part of the digestive canal is involved in:
Complete digestion of food ______.
Name the biological catalysts which bring about chemical digestion of food.
What is meant by life processes?
What is the role of hydrochloric acid in our stomach?
An enzyme secreted by gastric glands in stomach which acts on proteins.
Consider the following two statements A and B and select the right option from (i)-(iv) about their correctness.
- Small intestine is shorter than large intestine.
- Small intestine is wider than large intestine.
Options :
(i)Both the statements are correct
(ii) Both the statements are wrong
(iii) Statement A is correct, B is wrong
(iv) Statement B is correct, A is wrong
Write the function of the following in the human alimentary canal:
Bile juice
Fill in the blanks.
______ and ______ help in digestion but food does not pass through them.
Describe the following: Emulsification
Mark odd one in the series:
Name the enzymes secreted by the following: Stomach
All are functions of the liver, EXCEPT
Digestion of starch begins in the ______.
The process of digestion is completed by:
What happens when we swallow our food?
In which of the following vertebrate group/groups, the heart does not pump oxygenated blood to different parts of the body?
What is the significance of the emulsification of fats?
What are villi?
What is a vermiform appendix?
