Which of the following best describes the role of osmoreceptors in the regulation of water balance in the body?

Osmoreceptors in the pituitary gland regulate the secretion of cortisol in response to changes in plasma osmolality.

Osmoreceptors in the hypothalamus detect high plasma osmolality and stimulate the release of antidiuretic hormone (ADH), which enhances water reabsorption in the kidneys.

Osmoreceptors in the kidneys monitor blood pressure changes and regulate aldosterone secretion to control sodium reabsorption and water balance.

Osmoreceptors in the hypothalamus detect low plasma osmolality and inhibit the release of antidiuretic hormone (ADH), leading to increased urine production.

Answer and Explanation

The Correct Answer is B

A. Osmoreceptors in the pituitary gland regulate the secretion of cortisol in response to changes in plasma osmolality: This is incorrect as the pituitary gland itself does not have osmoreceptors; rather, the hypothalamus contains osmoreceptors.

B. Osmoreceptors in the hypothalamus detect high plasma osmolality and stimulate the release of antidiuretic hormone (ADH), which enhances water reabsorption in the kidneys: This is correct. Osmoreceptors in the hypothalamus sense changes in plasma osmolality and regulate ADH release to maintain water balance.

C. Osmoreceptors in the kidneys monitor blood pressure changes and regulate aldosterone secretion to control sodium reabsorption and water balance: This is not correct because the kidneys primarily use juxtaglomerular cells to sense blood pressure changes and regulate aldosterone, not osmoreceptors.

D. Osmoreceptors in the hypothalamus detect low plasma osmolality and inhibit the release of antidiuretic hormone (ADH), leading to increased urine production: This is partially correct; osmoreceptors do detect low osmolality, but their inhibition of ADH would decrease urine production, not increase it.

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Free Nursing Study Resources

Correct Answer is D

Explanation

A. Oral antibiotics: Antibiotics are not indicated for allergic rhinitis, as it is an allergic condition rather than an infection.
B. Oral decongestants: While decongestants can provide temporary relief from nasal congestion, they can also cause rebound congestion if used for prolonged periods.
C. Nasal saline irrigation: Nasal saline irrigation can help to clear out mucus and allergens but is not a primary treatment for allergic rhinitis.
D. Intranasal corticosteroids: Intranasal corticosteroids are the most effective treatment for allergic rhinitis, as they reduce inflammation in the nasal passages and help to alleviate symptoms.

A. Repeat blood serum potassium B. Educate client regarding high-potassium food sources C. Cardiac monitoring during infusion D. Ensure that the client's urine output is at least 1 mL/kg/hour E. Ensure potassium infusion is prepared with 5% dextrose solution

Correct Answer is ["C","D"]

Explanation

A. Repeat blood serum potassium: While it’s important to monitor potassium levels, the immediate priority when preparing to administer potassium is ensuring safe administration practices, not rechecking levels before initiating therapy.

B. Educate client regarding high-potassium food sources: Client education is important for long-term management but is not a priority when preparing for intravenous potassium replacement in an acute setting.

C. Cardiac monitoring during infusion: Potassium affects cardiac conduction, and rapid correction can lead to arrhythmias. Continuous cardiac monitoring is necessary to detect any life-threatening arrhythmias during the infusion.

D. Ensure that the client's urine output is at least 1 mL/kg/hour: Adequate urine output ensures that the kidneys are functioning and capable of excreting excess potassium, reducing the risk of hyperkalemia.

E. Ensure potassium infusion is prepared with 5% dextrose solution: Potassium should not be mixed with dextrose, as it can increase insulin release, causing potassium to shift into cells and worsen hypokalemia.

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Which of the following best describes the role of osmoreceptors in the regulation of water balance in the body?

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Naxlex Comprehensive Predictor Exams

Exhibits Which of the following is the most appropriate treatment strategy for this patient, who is likely experiencing allergic rhinitis?

Correct Answer is D

Explanation

A nurse is assisting with preparations for administering intravenous potassium replacement supplements to a client who has a potassium level of 2.5 mEq/L. Which of the following actions should the nurse plan to include? (Select all that apply.)

Correct Answer is ["C","D"]

Explanation

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