The nurse is caring for a client who has begun vomiting.
The nurse is aware that which part of the client’s brain has been stimulated?
Limbic system.
Hypothalamus.
Chemoreceptor trigger zone (CTZ).
Medulla oblongata.
The Correct Answer is C
The CTZ has to be stimulated in order for vomiting to occur. The CTZ is located in the area postrema of the medulla oblongata and receives input from various sources, such as the blood, the vestibular system, and the gastrointestinal tract.
Choice A is wrong because the limbic system involves emotion, not vomiting or other forms of GI function.
Choice B is wrong because the hypothalamus regulates various functions such as body temperature, hunger, thirst, and circadian rhythms, but not vomiting.
Choice D is wrong because the medulla oblongata is responsible for autonomic functioning such as ventilation, cardiac conduction, and vomiting, but it is not the site of stimulation for vomiting.
The medulla oblongata contains the vomiting center, which receives signals from the CTZ and other sources and initiates the act of vomiting.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
This is because teriparatide affects calcium and phosphorus metabolism in a pattern consistent with the known actions of endogenous PTH (eg, increases serum calcium and decreases serum phosphorus)12.
Choice A is wrong because teriparatide does not decrease serum calcium, but increases it.
Choice C is wrong because teriparatide does not increase serum phosphorus, but decreases it.
Choice D is wrong because teriparatide does not decrease serum calcium, but increases it.
Normal ranges for serum calcium are 8.5 to 10.2 mg/dL and for serum phosphorus are 2.5 to 4.5 mg/dL.
Correct Answer is D
Explanation
This is because prednisolone can cause insomnia if taken later in the day, and it mimics the natural secretion of cortisol by the adrenal glands, which peaks in the morning.
Choice A is wrong because splitting the dose into two equal doses can increase the risk of adrenal suppression and reduce the efficacy of alternate-day therapy (ADT), which is used to minimize adverse effects of corticosteroids.
Choice B is wrong because taking prednisolone before bedtime can interfere with sleep and cause nocturnal cortisol secretion, which can lead to Cushing syndrome.
Choice C is wrong because taking prednisolone 1 hour before meals can cause gastric irritation and ulceration, and it is recommended to take it with food or milk.
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