ADH release from the posterior pituitary is stimulated by which process?
Low blood pressure sensed by baroreceptors in the kidneys.
Low osmolality sensed by osmoreceptors in the kidneys.
High plasma osmolarity sensed by osmoreceptors in the hypothalamus.
High concentration of potassium sensed by chemoreceptors in the carotid body.
The Correct Answer is C
Choice A rationale: Low blood pressure sensed by baroreceptors in the kidneys would stimulate the renin-angiotensin-aldosterone system, which regulates blood pressure and sodium balance.
Choice B rationale: Low osmolality sensed by osmoreceptors in the kidneys would
indicate that the body has excess water and needs to excrete it, which would inhibit ADH release.
Choice C rationale: ADH, or antidiuretic hormone, is a peptide hormone that regulates the water balance in the body. It is released from the posterior pituitary gland in response to signals from the hypothalamus. When the plasma osmolarity, or the concentration of solutes in the blood, is high, it means that the body is dehydrated and needs to conserve water. The osmoreceptors in the hypothalamus detect this change and stimulate the release of ADH, which acts on the kidneys to increase water
reabsorption and decrease urine output. This helps to lower the plasma osmolarity and restore the water balance.
Choice D rationale: High concentration of potassium sensed by chemoreceptors in the carotid body would affect the acid-base balance and respiratory rate, but not ADH
release.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale: Clients with Graves' disease may have increased sensitivity to light due to ocular manifestations like photophobia, so keeping the room well-lit may can cause eye irritation.
Choice B rationale: Encouraging frequent ambulation and exercise may worsen the symptoms of hyperthyroidism, such as tachycardia, palpitations, and tremors.
Choice C rationale: This is because clients with Graves' disease have an increased
metabolic rate and may experience weight loss, muscle wasting, and fatigue. A high- calorie and high protein diet can help prevent these complications and provide adequate nutrition for the client.
Choice D rationale: Placing extra blankets over the client may increase the body temperature and cause heat intolerance, which is another common symptom of Graves' disease.
Correct Answer is C
Explanation
Choice A rationale: Metformin belongs to the biguanide class of antidiabetic medications.
Choice B rationale: Pioglitazone is a thiazolidinedione used to treat diabetes, not a sulfonylurea.
Choice C rationale: Glipizide is a sulfonylurea used to stimulate insulin secretion in type 2 diabetes.
Choice D rationale: Repaglinide is a meglitinide, another class of drugs that stimulates insulin release.
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