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Digestion and Absorption Test - 56

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Digestion and Absorption Test - 56
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  • Question 1
    1 / -0
    Secretin is produced by
    Solution
    Secretin is secreted by S cells in the duodenum and affects numerous other organs systems. Besides regulating the growth of the epithelial cells in the pancreas and biliary system, secretin additionally exerts trophic effects.

    So, option D is the correct option.
  • Question 2
    1 / -0
    Most digestion and absorption takes place in 
  • Question 3
    1 / -0
    Which is absorbed in ileum?
  • Question 4
    1 / -0
    Starch digestion by amylase is completed in
    Solution
    The digestion of starch begins with salivary amylase, but this activity is much less important than that of pancreatic amylase in the small intestine. Amylase hydrolyzes starch, with the primary end products being maltose, maltotriose is produced.
    So, option A is the correct option.
  • Question 5
    1 / -0
    Meckles diverticulum occurs in
    Solution
    Meckles diverticulum is located in the distal ileum, usually within 60-100 cm of the ileocecal valve. This blind segment or small pouch is about 3-6 cm long and may have a greater lumen diameter than that of ileum.
    So ,option C is the correct option.

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  • Question 6
    1 / -0
    Ileocaecal valve is present in between
    Solution
    Ileocaecal valve is a sphincter muscle that guards the opening of large intestine. It is found where small intestine(ileum) connects to the large intestine(colon) and controls the flow between these two areas to prevent the  contents of colon from contaminating the small intestine.
    So, the correct answer is 'Colon and small intestine'
  • Question 7
    1 / -0
    Aggregates of lymphoid tissue present in distal portion of small intestine are known as 
    Solution
    Peyer's patches are small masses of lymphoid tissue found throughout the wall of the ileum region of the small intestine of mammals. It is also known as lymphoid nodules. It is an important part of the immune system which prevents the infection of pathogenic bacteria in the intestine.
    Hence, the correct answer is (D)
  • Question 8
    1 / -0
    Which is component of Waldeyer's ring
    Solution
    Waldeyer's ring consists of 4 tonsillar structures (namely, the pharyngeal, tubal, palatine and lingual tonsils) as well as small collections of lymphatic tissue disbursed throughout the mucosal lining of the pharynx (mucosa-associated lymphoid tissue, MALT).
    so, the correct answer is 'Tonsils
  • Question 9
    1 / -0
    Which option is correct for the region labelled as A and B in the given diagram of transverse section of gut?

    Solution
    The transverse section of the human alimentary canal consists of 4 distinct layers. 1. the innermost mucosa, 2. submuosa on top of the mucosal layer, 3. Muscularis- a layer of smooth muscles covering the submucosal layer. 4. serosa- the outermost layer of the alimentary canal.
    In the figure, the A - represents the innermost layer mucosa and B the layer on top of mucosa called the submucosa. Thus, the correct option is A.
  • Question 10
    1 / -0
    Sucrose is broken down in the lining layer of intestine to form fructose and glucose. The products are
    Solution
    Large food molecules (for example, proteins, lipids, nucleic acids, and starches) must be broken down into sub-units that are small enough to be absorbed by the lining of the alimentary canal. This is accomplished by enzymes through hydrolysis. In the small intestine, pancreatic amylase does the ‘heavy lifting’ for starch and carbohydrate digestion. After amylases break down starch into smaller fragments, the brush border enzyme α-dextrinase starts working on α-dextrin, breaking off one glucose unit at a time. Three brush border enzymes hydrolyze sucrose, lactose, and maltose into monosaccharides. Sucrase splits sucrose into one molecule of fructose and one molecule of glucose.
    So, the correct option is 'Poured into intestinal lumen'.
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