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प्रश्न
Draw a diagram of the human alimentary canal and label - gall bladder, pancreas, liver, and small intestine on it.
उत्तर
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संबंधित प्रश्न
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?
Answer in detail.
Name the four types of teeth and their functions
What do you mean by nutrition?
Correct the spellings: Ptorein
Describe the digestion of starch.
The question has four options. Choose the correct answer:
Trypsin is connected with the digestion of
A calcified connective tissue from which the basic shape of the tooth is derived is known as ______.
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 |
Identify the INCORRECT statement.
Solve the crossword given in Figure 2.3.
| Across | Down | ||
| 1 | Cream-coloured digestive gland | 2 | Feeds with the help of pseudopodia |
| 3 | Undigested excretory solid residues | 6 | Total number of molars in one jaw of an adult |
| 4 | Organ that mixes saliva with the food | 8 | Largest gland |
| 5 | Point of defecation | 9 | Watery secretion in the mouth |
| 7 | Stored in gall bladder | 11 | A ruminant |
| 10 | Finger-like outgrowth in the small intestine | 12 | Form of food chewed by ruminants |
| 13 | Kind of taste buds | ||
| 14 | Kills bacteria in the stomach | ||
