VASCULAR
THE NEPHRON
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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decreases permeability to reduce water level in blood
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increases permeability to increase water level in blood
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increases selective reabsorption of glucose
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increases the volume of urea in the urine
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Detailed explanation-1: -ADH increases water and urea permeability of the distal nephron, leading to excretion of a small volume of concentrated urine, thereby minimizing further loss of blood volume and decreasing the osmolarity of the plasma back toward normal.
Detailed explanation-2: -Explanation: ADH acts upon the collecting ducts and distal convoluted tubules of nephrons to increase water reabsorption. It causes an increase in the number of aquaporins in order to allow for this.
Detailed explanation-3: -Antidiuretic hormone (ADH) is a chemical produced in the brain that causes the kidneys to release less water, decreasing the amount of urine produced. A high ADH level causes the body to produce less urine. A low level results in greater urine production.
Detailed explanation-4: -Water excretion by the kidney is regulated by the peptide hormone vasopressin. Vasopressin increases the water permeability of the renal collecting duct cells, allowing more water to be reabsorbed from collecting duct urine to blood.