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प्रश्न
Define the following term:
Peristalsis
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उत्तर
Peristalsis is the rhythmic contraction and relaxation of the muscles of the alimentary canal that pushes the food along the gut.
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संबंधित प्रश्न
Draw neat labelled diagram of the pancreas with their associated structures
The gall bladder temporarily stores bile.
The process of digestion of food in humans begins in:
(a) stomach
(b) food pipe
(c) mouth
(d) small intestine
Which part of alimentary canal receives bile from the liver?
(a) oesophagus
(b) small intestine
(c) stomach
(d) large intestine
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.
(a) What are (i) organisms A, and (ii) substance B?
(b) What are (i) part C, and (ii) part D, of tooth known as?
(c) By what name are the holes E in the tooth known?
(d) Name the part F of the tooth.
(e) What will happen if organisms A reach part F of the tooth known?
Write the function of the following in the human alimentary canal:
Villi
Fill in the blanks.
Incisors are used for _____ and _____ the food.
Fill in the blank.
The human teeth appear in two sets, the first set is called primary which consists of only _______ teeth
Name the following
The organ into which the pancreatic juice and the bile juice are poured
Name the types of teeth seen in humans.
Write true or false for the below statement. Rewrite the false statements correctly.
All the absorbed nutrients are immediately required by the body.
Give reasons for the following:
All teeth in the mouth are not alike.
Who is telling a lie?
Appendix: Digestion is impossible without me.
Circle the odd one.
Match the two columns and select correct option.
| Column - I | Column - II | ||
| i. | Sphincter of Oddi | a. | Oesophagus and stomach |
| ii. |
Ileo-caecal sphincter |
b. | Stomach and small intestine |
| iii. | Pyloric sphincter | c | Ileum and caecum |
| iv. |
Gastro-oesophageal sphincter |
d. | Opening of hepato- pancreatic duct |
The common bile duct and pancreatic form ______.
Identify the salivary gland lying below the tongue.
The coiled middle portion of the small intestine which is 2.5 meters long is the ______.
List the parts of the digestive system.
Mucosa forms __a__ in stomach and ___b___ in intestine respectively.
