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Function of the DCT

The release o...

Question

The release of ADH takes place from hypothalamus when

A

Osmolarity of blood increases

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B

Osmolarity of blood decreases

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C

Blood volume increases

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D

Urine becomes hypertonic

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Solution

The correct option is A Osmolarity of blood increases
Increased osmolarity in the blood will stimulate the secretion of anti-diuretic hormone (ADH), which increases the reabsorption of water in the kidneys.

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Q. In a negative feedback system, a vascular organ of the brain monitors blood osmolarity and signals the release of ADH. When you eat salty food, your blood osmolarity rises above the set point. Predict what would happen next?

Q. Which of the following statement/statements is/are incorrect?
I) ADH is released if blood has low osmolarity.
II) ADH is released if blood has high osmolarity.
III) Aldosterone facilitates water reabsorption.
IV) ANF causes vasoconstriction.
V) ADH increases water reabsorption.

Q. How ADH increases blood pressure?

C O_{2}

concentration in blood increases, breathing becomes

O_{2}

concentration in blood increases, breathing becomes

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