Water and Electrolyte Balance - Mock Test 3

Question 21

In a solution having a pH of 7.4, the hydrogen ion concentration is?

A) 7.4 nmol/L B) 40 nmol/L C) 56 nmol/L D) 80 nmol/L

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Question 22

A diuretic which is an aldosterone antagonist is?

A) Spironolactone B) Ethacrynic acid C) Acetazolamide D) Chlorothiazide

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Question 23

Furosemide inhibits reabsorption of sodium and chloride in?

A) Proximal convoluted tubules B) Loop of Henle C) Distal convoluted tubules D) Collecting ducts

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Question 24

Thiazide diuretics inhibit?

A) Carbonic anhydrase B) Aldosterone secretion C) ADH secretion D) Sodium reabsorption in distal tubules

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Question 25

Diabetes insipidus results from?

A) Decreased insulin secretion B) Decreased ADH secretion C) Decreased aldosterone secretion D) Unresponsiveness of osmoreceptors

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Question 26

Urinary water loss is increased in?

A) Diabetes mellitus B) Diabetes insipidus C) Chronic glomerulonephritis D) All of these

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Question 27

Antidiuretic hormone?

A) Is secreted by hypothalamus B) Secretion is increased when osmolality of plasma decreases C) Increases obligatory reabsorption of water D) Acts on distal convoluted tubules and collecting ducts

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Question 28

Obligatory reabsorption of water?

A) Is about 50% of the total tubular reabsorption of water B) Is increased by antidiuretic hormone C) Occurs in distal convoluted tubules D) Is secondary to reabsorption of solutes

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Question 29

Recurrent vomiting leads to loss of?

A) Potassium B) Chloride C) Bicarbonate D) All of these

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Question 30

The daily water loss through gastrointestinal tract in an adult is about?

A) Less than 100 ml/day B) 200 ml/day C) 300 ml/day D) 400 ml/day

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