A nurse is teaching a newly licensed nurse about the function of the large intestine.
Which of the following information should the nurse include?
It produces vitamin D.
It prevents the reflux of food into the esophagus.
It absorbs liquid to form stool.
It secretes enzymes to digest food.
The Correct Answer is C
Choice C rationale
The large intestine absorbs water and electrolytes from the remaining indigestible food matter, forming and eliminating solid waste (stool). This absorption process is vital for
maintaining the body's fluid and electrolyte balance.
Choice A rationale
The large intestine does not produce vitamin D; this occurs in the skin when exposed to sunlight. The large intestine’s primary functions are absorption and waste formation.
Choice B rationale
Preventing the reflux of food into the esophagus is the function of the lower esophageal sphincter, not the large intestine. The large intestine deals with waste processing rather than regulating esophageal function.
Choice D rationale
The secretion of digestive enzymes is a function of the pancreas, stomach, and small intestine. The large intestine does not secrete enzymes but focuses on absorbing water and electrolytes.
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View Related questions
Correct Answer is D
Explanation
Choice A rationale
Aging usually leads to a decrease in muscle tone of the bowel rather than an increase, which can result in slower bowel movements and constipation.
Choice B rationale
Gastric acid production tends to decrease with age, not increase. This can affect the digestion and absorption of nutrients, and also increase the risk of stomach infections.
Choice C rationale
The pH of the stomach tends to become less acidic (increase) as one ages, not decrease. This is often due to the reduced production of gastric acid.
Choice D rationale
Decreased intestinal peristalsis is a common physiological change in older adults. This slowing down of the intestinal movements can lead to constipation and other digestive issues.
Correct Answer is B
Explanation
Choice A rationale
White rice is a low-fiber food that is usually recommended to help manage diarrhea, as it can help firm up stools.
Choice B rationale
Caffeinated beverages can increase intestinal motility and secretions, leading to diarrhea. They can also be irritating to the gastrointestinal tract.
Choice C rationale
Low-fiber cereals are less likely to cause diarrhea and are often recommended for those with diarrhea because they are easy to digest.
Choice D rationale
Ripe bananas are low in fiber and high in potassium, which is beneficial for those with diarrhea as they help in firming up the stool.