BIOLOGY
HORMONES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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release MORE ADH, making the collecting duct MORE permeable
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release LESS ADH, making the collecting duct LESS permeable
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release MORE ADH, making the collecting duct LESS permeable
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release LESS ADH, making the collecting duct MORE permeable
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Detailed explanation-1: -Dehydration causes the hypothalamus to release ADH (antidiuretic hormone) via the posterior pituitary gland. The ADH signal tells the kidneys to recover water from urine, which dilutes the blood plasma.
Detailed explanation-2: -ADH reduces water loss via lowered urine volume.
Detailed explanation-3: -A decrease in blood volume or low blood pressure, which occurs during dehydration or a haemorrhage, is detected by sensors (baroreceptors) in the heart and large blood vessels. These stimulate anti-diuretic hormone release.
Detailed explanation-4: -Sensors in your body detect when your blood volume changes and needs more ADH. These sensors talk to your brain and the pituitary gland releases ADH into your bloodstream. When ADH makes it to your kidneys, it signals them to conserve water and produce more concentrated urine.