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प्रश्न
Write down the explanation.
Explain why human dentition is considered as thecodont, diphydont and heterodont.
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उत्तर
- Human dentition is described as thecodont, diphyodont and heterodont.
- It is called thecodont type because each tooth is fixed in a separate socket present in the jaw bones by gomphosis type of joint.
- It is called diphyodont type because we get only two sets of teeth, milk teeth and permanent teeth.
- It is called heterodont type because humans have four different type of teeth like incisors, canines, premolars and molars.
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संबंधित प्रश्न
Write names of different parts of human digestive system and explain functions of any three parts.
In which part of the digestive system is water absorbed?
What is the name of the opening in the human body through which undigested food is thrown out?
What causes movement of food inside the alimentary canal?
Where are proteins first digested in the alimentary canal?
Which of the following is the correct sequence of parts as they occur in the human alimentary canal?
Why is there no enzyme to digest vitamins?
What is the main function of bile?
Define the following term:
assimilation
Rewrite the following parts of the human alimentary canal in their correct sequence Stomach, Oesophagus, Large instestine, Small intestine, Pharynx.
Define the term ‘digestion’.
Fill in the blank.
Peristalsis is caused by _____________________________.
Write true or false for the below statement. Rewrite the false statements correctly.
The pancreas secretes bile juice
Write true or false for the below statement. Rewrite the false statements correctly.
Digestion of food in the intestine takes place in the presence of dilute hydrochloric acid.
Answer in detail.
Name the four types of teeth and their functions
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.
Describe the digestion of food in small intestine.
Correct the spellings: Disegion
Correct the spellings: Bilirubin
The question has four options. Choose the correct answer:
Uvula can close the opening of
The question has four options. Choose the correct answer:
Teeth present in the upper molar of human beings are
What bodily needs or sensations do you become aware of even though you are reading a book?
Write down the explanation.
Explain the structure of tooth.
Identify which three of the following terminologies is true for human dentition.
What happens when we swallow our food?
How do fats get digested in human beings?
Cud is the name given to the food of ruminants which is ______.
Read the following passage carefully and answer the questions that follow it.
| Bile juice is stored in a sac called, gall bladder, located near its organ of secretion, liver. The gall bladder releases the bile juice into the small intestine whenever food reaches there. Though bile juice is devoid of any digestive enzymes, it is required for the digestion of fats. The fats cannot be digested easily because they are insoluble in water and are present as large globules. Bile juice breaks down big fat droplets into smaller droplets. These are then easily digested by the enzymes released from the pancreas. |
- Which organ secretes the bile juice?
- Why is digestion of fats difficult as compared to that of other nutrients?
- How does bile juice help in the digestion of fat?
- Where is the digestion of fat completed?
- Does bile juice digest fat completely?
