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प्रश्न
What are villi?
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उत्तर
The ileum is the longest part of the small intestine. It contains minute finger-like projections called villi. They help in the absorption of food.
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संबंधित प्रश्न
Where is the bile produced? Which component of the food does it help to digest?
Which part of the digestive canal is involved in:
Killing of bacteria ______.
The process of digestion in humans is completed in ______.
| 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?
Define the following term:
Assimilation
Write one function each of the following enzymes:
Pepsin
Fill in the blank.
The _______ are used for tearing the food.
Identify and name the four type of teeth shown below and give their functions
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.
Write true or false for the below statement. Rewrite the false statements correctly.
The removal of faeces through the anus is called excretion.
Answer in detail.
What happens to the nutrients absorbed in the bloodstream from the small intestine?
What do you mean by nutrition?
The question has four options. Choose the correct answer:
Parotid salivary glands occur
The process of digestion starts from the ______.
How do the salivary glands come to know that there is food in the mouth and it is time to secrete saliva?
Identify which three of the following terminologies is true for human dentition.
The passage of food into the stomach is controlled by the ______.
Fill in the blanks using the words listed below.
| water, front, intestinal, salts, pseudopodia, back, vacuole |
- The digestion of all food components is completed by the ______ juice.
- Large intestine absorbs ______ and some ______ from the undigested food.
- Tongue is attached at the ______ to the floor of the mouth cavity and is free at the ______.
- Amoeba pushes out ______ around the food and traps it in a food ______.
What are different types of cells present in the crypts of Lieberkuhn?
Statement I - The muscularis of intestine can be differentiated into longitudinal and oblique muscles only.
Statement II - The muscularis of stomach is made up of outer- longitudinal, middle oblique and inner circular muscles.
In light of above statements, choose the most appropriate answer from the option given below.
