Answer each of the following briefly: a) Compare the digestion and absorption of carbohydrates, proteins and fats. b)...

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Medical Sciences

Answer each of the following briefly:

a) Compare the digestion and absorption of carbohydrates,proteins and fats.

b) Describe the three phases of digestion - cephalic, gastricand intestinal.

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a The three primary macronutrients required for the body include carbohydrates proteins and lipids As per the National Academy of Sciences the recommended Acceptable Macronutrient Distribution Range AMDR for proteins carbohydrates and fats as a percent of daily intake in calories is Proteins 10 to 35 Carbohydrates 45 65 Fats 20 to 35 for all ages the saturated fats must be less than 10 Digestion and absorption of carbohydrates The carbohydrate digestion begins in the mouth Salivary amylase is a digestive enzyme present in the saliva which catalyses the hydrolysis of complex carbohydrates into simple trisaccharides or disaccharides It is synthesised by salivary glands present in the mouth and pancreas also synthesise amylase it is pancreatic amylase The disaccharides in the small intestine trigger the release of maltase sucrase and lactase which    See Answer
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