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The ANF and Its Functions

The absorptio...

Question

The absorption of $N a^{+}$ and secretion of $K^{+}$ by the nephron is under the control of hormone

A

ADH

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B

Corticosterone

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C

Aldosterone

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D

Progesterone

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Solution

The correct option is C Aldosterone
Aldosterone causes sodium to be absorbed and potassium to be excreted into the lumen by principal cells. In alpha intercalated cells, located in the late distal tubule and collecting duct, hydrogen ions and potassium ions are exchanged. Hydrogen is excreted into the lumen, and the potassium is absorbed.
So, option C is the correct option.

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Q. Which of the following statements are correct?

(i) Re-absorption of water occurs passively in the initial segment of nephron.
(ii) Nitrogenous wastes are absorbed by passive transport.
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N a^{+}

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(iv) DCT reabsorbs

H C O_{3}

(v) DCT is capable of selective secretion of

H^{+}

K^{+}

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p H

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balance in blood.

Q. Which of the following epithelium is found in the ducts of glands and tubular parts of the nephrons in kidneys and whose main functions are secretion and absorption?

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Q. Assertion :The hormone aldosterone increases the reabsorption of

N a^{+}

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. Reason: To maintain the pH of the blood and body fluids, the kidney secrete

H^{+}

N H^{+}

Q. Secretion of sex hormones is under the control of __________.

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