HUMAN PHYSIOLOGY
DIGESTION AND ABSORPTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The enzymes work properly when they have time to react with their substrates
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The small intestine is very long
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Most food passes through undigested
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The enzymes produced by the small intestine take a long time to be produced
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Detailed explanation-1: -It takes up to five hours for the small intestine to process a single meal through its 22-foot length. During that time, it systematically breaks food down and absorbs 95% of its nutrients. It coordinates with the stomach, pancreas and gallbladder to cue digestive juices when food is present.
Detailed explanation-2: -The liquefaction of the food is very important before the food can be passed on to the intestines for further processing. It is interesting to know that actually our brain starts this whole process.
Detailed explanation-3: -What happens to the digested food? The small intestine absorbs most of the nutrients in your food, and your circulatory system passes them on to other parts of your body to store or use. Special cells help absorbed nutrients cross the intestinal lining into your bloodstream.
Detailed explanation-4: -The small intestine is so long because it needs a maximum amount of surface area to increase digestion and nutrient absorption. The small intestine is where your body breaks down food and takes up all the possible nutrients from it before discarding the rest as waste.
Detailed explanation-5: -Duodenum: This short section is the part of the small intestine that takes in semi-digested food from your stomach through the pylorus, and continues the digestion process. The duodenum also uses bile from your gallbladder, liver, and pancreas to help digest food.