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Digestion and Absorption Test - 52

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Digestion and Absorption Test - 52
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  • Question 1
    1 / -0
    Brush border of small intestine cells is formed of ____________.
    Solution
    1. The innermost layer lining the lumen of the alimentary canal is the mucosa. This layer forms irregular folds (rugae) in the stomach and small finger-like foldings called villi in the small intestine.
    2.  The cells lining the villi produce numerous microscopic projections called microvilli giving a brush border appearance found on the apical surface of some epithelial cells. These modifications increase the surface area enormously and help in secretion and absorption. 
    3. Microvilli are covered in the plasma membrane, which encloses cytoplasm and microfilaments. Though these are cellular extensions, there are little or no cellular organelles present in the microvilli. Hence, the brush border of small intestine cells is formed of microvilli.
    So, the correct answer is 'microvilli'.
  • Question 2
    1 / -0
    Many enzymes are produced in inactive state are referred to as
    Solution
    The enzymes are protein in nature and they are generally produced in an inactive form in order to prevent their action body tissues. The best example is the digestive enzymes which are secreted in form of zymogens (Pepsinogen, Trypsinogen etc.,) which remain inactive in the cells in which they are produced. They are activated by proteolytic cleavage. The inactive form of the enzymes called the zymogens or proenzymes or enzyme precursors. So, the correct answer is option D.

  • Question 3
    1 / -0
    Cardiac sphincter protects back flow of
  • Question 4
    1 / -0
    Raju looks older than his age. HIs body is fat and has pain in his leg. What kind of food did he use to eat?
    Solution
    An unbalanced diet like pizza, soft drinks and burger etc, lack essentials nutrients required by the body. This kind of poor diet cause obesity and fatigue and make the body unhealthy.
    So the correct answer is 'Both B and C'.
  • Question 5
    1 / -0
    Meissner's plexus of stomach is present in between.
    Solution
    The submucosal plexus, also known as Meissner's plexus, is situated in the submucosal region between the oblique muscle and sub-mucosa. Hence, Option A is correct.
  • Question 6
    1 / -0
    Marasmus is due to deficiency of
    Solution
    Nutrient deficiency is the main cause of marasmus. It occurs in children that don't ingest enough protein, calories, carbohydrates, and other important nutrients. This is usually due to poverty and or scarcity of food. 
    So, the correct answer is 'Food'

  • Question 7
    1 / -0
    The stomach takes part in _________.
    Solution
    The stomach is a muscular organ located on the left side of the upper abdomen. The food is broken and digested by gastric juices and enzymes. HCl secreted in stomach kills infectious organisms. 
    Hence, Option 'D' is correct.
  • Question 8
    1 / -0
    Duodenum produces hormones
  • Question 9
    1 / -0
    Intrinsic factor is required for
    Solution
    The intrinsic factor (IF) is a glycoprotein produced by the parietal cells (oxyntic cells) located at the gastric body and fundus. It plays a crucial role in the transportation and absorption of the vital micronutrient vitamin B12 (cobalamin, Cbl) by the ileum.
    So, the correct answer is 'Absorption of 
    B12
  • Question 10
    1 / -0
    Germs entering the body along with food are killed in alimentary canal where pH is
    Solution

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