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 B
Explanation
Choice A rationale: This test is not specific for confirming osteoporosis.
Choice B rationale: This test is called a bone mineral density (BMD) test or a dual-energy X-ray absorptiometry (DXA) scan. It measures how much calcium and other minerals are in a segment of bone.
Choice C rationale: This test is not specific for confirming osteoporosis.
Choice D rationale: This test is not specific for confirming osteoporosis.
Correct Answer is C
Explanation
Choice A rationale: BSE will not reduce the risk of dying from breast cancer, but it may help you detect breast cancer earlier, when it is more treatable.
Choice B rationale: BSE should be done once a month, preferably at the same time each month. For women who have menstrual periods, the best time to do BSE is a few days after the period ends, when the breasts are less tender and swollen. For women who do not have menstrual periods, such as those who are pregnant, breastfeeding, or postmenopausal, they can choose a fixed date, such as the first day of each month, to do BSE.
Choice C rationale: For women who have menstrual periods, the best time to do BSE is a few days after the period ends, when the breasts are less tender and swollen. For women who do not have menstrual periods, such as those who are pregnant, breastfeeding, or postmenopausal, they can choose a fixed date, such as the first day of each month, to do BSE.
Choice D rationale: Annual mammograms are recommended for women aged 40 and older, or earlier if they have a high risk of breast cancer and not all women. Women aged less than 30 years should undergo breast ultrasound instead.
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