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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Correct Answer is D
Explanation
Choice D rationale
Intravenous (IV) administration has the fastest rate of absorption because the medication is delivered directly into the bloodstream, bypassing the absorption barriers of the digestive
system or muscle tissue. This ensures rapid onset of action.
Choice A rationale
Enteral administration involves the gastrointestinal tract, including oral and feeding tube methods. Absorption is slower as the medication passes through the digestive system before
entering the bloodstream.
Choice B rationale
Intramuscular (IM) administration involves injecting the medication into muscle tissue, where it is absorbed into the bloodstream. Absorption is quicker than enteral routes but slower
compared to IV administration.
Choice C rationale
Topical administration involves applying medication to the skin or mucous membranes. Absorption is generally slower and is intended for local or systemic effects, depending on the medication.
Correct Answer is C
Explanation
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.