AP BIOLOGY

ANIMAL PHYSIOLOGY

OSMOREGULATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
More ADH means
A
concentrated urine
B
Dilute urine
C
less permeable DCT
Explanation: 

Detailed explanation-1: -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-2: -ADH normally causes the kidneys to make the urine more concentrated. As a result of not responding to the ADH signal, the kidneys release too much water into the urine. This causes the body to produce a large quantity of very dilute urine. NDI is very rare.

Detailed explanation-3: -SIADH happens when your body makes excess amounts of antidiuretic hormone (ADH). SIADH causes your body to retain too much water and commonly leads to hyponatremia, which is low levels of sodium in your blood. It’s treatable.

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