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प्रश्न
Mention two ways in which the ileum of the mammal is adapted for the absorption of digested food.
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उत्तर
Adaptations of ileum for the absorption of digested food:
(1) Very long to provide more surface area for absorption
(2) Presence of large number of villi to further increase the surface area
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संबंधित प्रश्न
Which part of the digestive canal is involved in:
Formation of faeces ______.
Define holozoic nutrition. Give one example
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The process of digestion of food in humans begins in:
(a) stomach
(b) food pipe
(c) mouth
(d) small intestine
In human digestive system, the enzymes pepsin and trypsin are secreted respectively by:
(a) pancreas and liver
(b) stomach and salivary glands
(c) pancreas and gall bladder
(d) stomach and pancreas
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(a) oesophagus
(b) small intestine
(c) stomach
(d) large intestine
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Digestion and Absorption
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| Column A | Column B | ||
| 1 | HCl | a | Lactose |
| 2 | Rennin | b | Pellagra |
| 3 | Enteropeptidase | c | Rumen |
| 4 | Cellulose | d | Pepsin |
| 5 | Ptyalin | e | Starch |
| 6 | Vitamin | f | Pernicious anaemia |
| 7 | Intestinal juice | g | Trypsin |
| 8 | Bile salt | h | Casein |
| 9 | Vitamin A | i | Micelle |
| 10 | Goitre | j | Night-blindness |
| k | Iodine | ||
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| Across | Down | ||
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| 3. | Undigested excretory solid residues | 6. | Total number of molars in one jaw of an adult |
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| 5. | Point of defecation | 9. | Watery secretion in the mouth |
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| 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 | ||
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