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 D
Explanation
Choice A rationale: Expressive aphasia is a type of non-fluent aphasia that affects the
ability to produce language. It is caused by damage to the anterior part of the left frontal lobe, which is responsible for motor planning and execution of speech. Patients with expressive aphasia can understand language but have difficulty speaking, writing, or naming objects. They often produce short, halting, and grammatically incorrect sentences with word-finding difficulties.
Choice B rationale: this is another term for expressive aphasia. The patient can
understand language but have difficulty speaking, writing, or naming objects. They often produce short, halting, and grammatically incorrect sentences with word-finding difficulties.
Choice C rationale: Global aphasia is a severe form of aphasia that affects both
comprehension and production of language. It is caused by extensive damage to the left hemisphere of the brain, which is dominant for language functions in most people.
Patients with global aphasia have little or no ability to speak, write, read, or understand language.
Choice D rationale: Wernicke's aphasia is a type of receptive aphasia that affects the
comprehension and production of language. It is caused by damage to the posterior part of the left temporal lobe, which is responsible for processing auditory and visual
information. Patients with Wernicke's aphasia can speak fluently but nonsensically, using words that are irrelevant, invented, or distorted. They also have difficulty understanding spoken or written language and following commands.
Correct Answer is D
Explanation
Choice A rationale: This is not relevant to the current condition of the patient and does not support a diagnosis of renal calculi.
Choice B rationale: This is a sign of upper gastrointestinal bleeding, which can have many causes such as peptic ulcer, gastritis or esophageal varices. It is not related to renal calculi or urinary tract problems.
Choice C rationale: Renal calculi usually causes pain which usually radiates anteriorly to the lower abdomen, groin, labia, testicles or the perineum depending on the location of the stone.
Choice D rationale: This is a sign of hematuria, which is blood in the urine caused by the passage of renal calculi (kidney stones) through the urinary tract. Hematuria can also cause the urine to appear dark or brown in color.
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