One of the constituents of the pancreatic juice while poured into the duodenum in humans, is
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Solution
Tryspinogen it is inactive form and all enzymes of pancreas are secreted in this form. Enzyme enterokinase secreted from the duodenal mucosa, changes trypsinogento trypsin.
Mark the incorrect statement in the followings
Which one of the following enzymes carries out the initial step in the digestion of milk in humans?
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Solution
Rennin is an enzyme that is essential for the protein digestion. It is active in low acid medium and inactive by normal gastic juice of adult.
Two friends are eating together on a dining table. One of them suddenly starts coughing while swallowing some food. This coughing would have been due to improper movement of
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Solution
The coughing would have been due to improper movement of epiglottis.
Carbohydrases are missing from
If for some reason our goblet cells are non functional, this will adversely affect:
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Solution
Goblet cells, found in the intestinal mucosal epithelium,secrete mucus. The mucus lubricates the food for an easy passage. So, if for some reason, goblet cells become non-functional, it will adversely affect the smooth movement of food down the intestine.
Which one of the following statements is true regarding digestion and absorption of food in humans?
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Solution
Fructose and amino acids are absorbed through intestinal mucosa with the help of carrier ions like Na+.Carbohydrates are absorbed as monosaccharides (simplesugars such as glucose, fructose, and galactose that cannot be further broken down by hydrolysis) or as disaccharides(such as sucrose, lactose, maltose, and dextrin that can be hydrolyzed to two monosaccharides). These simpler molecules, however, must be obtained by the breaking down of polysaccharides, (complex carbohydrates) that contain many monosaccharides.Chief among these is amylase, a starch that accounts for 20 percent of dietary carbohydrate.
A young infant may be feeding entirely on mothers milk which is white in colour but the stools which the infant passes out is quite yellowish. What is this yellow colour due to ?
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Solution
Young infant may be feeding entirely on mother’s milk which is white in colour but the stools which the infant passes out is quite yellowish because bile pigments passed through bile juice. Bile pigments are any of several coloured compounds derived from porphyrin that are found in bile; principally bilirubin and biliverdin. Bile pigment is produced regularly when old red blood cells are broken down, mainly by the spleen. In some blood-disorders where the red cells are destroyed, more bile pigment is produced.
Muscular contraction in alimentary canal is called
When breast feeding is replaced by less nutritive food low in proteins and calories; the infants below the age of one year are likely to suffer from
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Solution
If breast feeding is replaced by less nutritive food low in proteins and calories; the infants below the age of one year are likely to suffer from marasmus. Marasmus is a form of malnutrition that occurs when there is not enough protein in the diet.