HISTOLOGY
URINARY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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When you are dehydrated what out of the following options will happen? [3]
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Less ADH will be secreted by the pituitary.
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More water will be reabsorbed back into the blood.
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Osmoreceptors in the hypothalamus will detect increased blood concentration.
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The volume of urine will increase.
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More ADH will be secreted by the pituitary.
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Explanation:
Detailed explanation-1: -Syndrome of inappropriate antidiuretic hormone secretion (SIADH) is a condition in which the body makes too much antidiuretic hormone (ADH). This hormone helps the kidneys control the amount of water your body loses through the urine. SIADH causes the body to retain too much water.
Detailed explanation-2: -Antidiuretic hormone stimulates water reabsorbtion by stimulating insertion of “water channels” or aquaporins into the membranes of kidney tubules. These channels transport solute-free water through tubular cells and back into blood, leading to a decrease in plasma osmolarity and an increase osmolarity of urine.
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