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Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332

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BuyFindarrow_forward

Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332
Textbook Problem
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Increased sodium reabsorption ___ .

  1. a. will make urine more concentrated
  2. b. will make urine more dilute
  3. c. is stimulated by aldosterone
  4. d. both a and c

Summary Introduction

Introduction: Hormone is important to regulate the urine’s concentration and its composition. Hypothalamus gland signals the pituitary gland to release antidiuretic hormone (ADH). ADH is a hormone that increases the reabsorption of the water through passive transport protein called aquaporins. Another hormone called aldosterone secreted by adrenal cortex increases the sodium reabsorption. Both, ADH and aldosterone help in the formation of concentrate urine.

Explanation

Reasons for the correct statements:

Increased sodium reabsorption is stimulated by aldosterone hormone which makes the urine more concentrated.

Option a. is given as “will make urine more concentrated”.

Option c. is given as “is stimulated by aldosterone”.

Option d. is given as “both a and c”. Hence, option d. is correct.

Reasons for the incorrect statement:

Option a. is given as “will make urine more concentrated”. The option a. is correct, but the other option c...

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