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प्रश्न
How do carbohydrates, fats and proteins get digested in human beings?
उत्तर
Carbohydrates are digested by the enzyme, salivary amylase, present in the saliva. As food enters the mouth cavity, it gets mixed with the saliva, which contains salivary amylase. This enzyme helps in the digestion of starch.
The enzyme, pancreatic amylase, is secreted by the pancreas. This enzyme reaches the small intestine and digests the carbohydrates.
Proteins are digested by the enzyme, pepsin, that is secreted in the stomach by the glands presents in its walls. Trypsin is secreted by the pancreas. This enzyme reaches the small intestine and digests the proteins.
Fats are digested by the enzyme, lipase, that is secreted by the pancreas and the bile juice that is secreted by the liver. These two act on the fats in the small intestine.
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संबंधित प्रश्न
Draw neat labelled diagram of the pancreas with their associated structures
What are the main characteristics of enzyme?
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
Define with examples: Herbivores
Name the salivary glands in our mouth?
All are functions of the liver, EXCEPT
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 exit of unabsorbed food material is regulated by ____________.
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 | ||
