Urinary System: Filtration and Urine Output Quiz

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Questions and Answers

What is the role of natriuretic hormone in diabetic kidney disease?

  • Promotes Na+ reabsorption
  • Induces widespread vasodilation
  • Causes Na+ secretion (correct)
  • Causes an increase in Ca++ reabsorption

How do baroreceptors respond to an increase in blood pressure?

  • Check BP in the aorta and carotid sinuses
  • Induce vasodilation (correct)
  • Cause a decrease in Ca++ reabsorption
  • Signal the release of renin

What is the primary function of renin in the body?

  • Induces Ca++ reabsorption
  • Increases rbc production
  • Regulates BP (correct)
  • Promotes Na+ secretion

How is vitamin D synthesized in the body?

<p>Hydroxylation (-OH) must be added to make calcitriol (C)</p> Signup and view all the answers

What is the impact of hydrogen on acid-base homeostasis?

<p>Maintains urine pH within a specific range (D)</p> Signup and view all the answers

Why is the kidney essential for proper pH regulation?

<p>For balancing hydrogen ions (C)</p> Signup and view all the answers

What does oliguria, or the excretion of 300-500 mL of urine per day, indicate?

<p>Kidney disease (B)</p> Signup and view all the answers

What is the main function of the nephrons in the kidney?

<p>Cleanse blood and form urine (D)</p> Signup and view all the answers

What causes the systemic edema that results in the body 'plumping up'?

<p>Too much protein in the filtrate (B)</p> Signup and view all the answers

Which hormone increases sodium reabsorption in the distal convoluted tubule?

<p>Aldosterone (D)</p> Signup and view all the answers

What is the role of the macula densa in the kidney's nephron?

<p>Regulate renin release (A)</p> Signup and view all the answers

What is the function of the renal hilum in the kidney?

<p>Recovers water and solutes for reabsorption (D)</p> Signup and view all the answers

Which condition does polyuria, or excreting more than 2.5 liters of urine per day, typically indicate?

<p>Diabetes insipidus (C)</p> Signup and view all the answers

Why does the presence of leukocytes in urine indicate a specific condition?

<p>Urinary tract infection (B)</p> Signup and view all the answers

What does the presence of ketones in urine indicate about an individual's health?

<p>Diabetes mellitus (C)</p> Signup and view all the answers

How does the distal convoluted tubule differ from the proximal convoluted tubule in terms of function?

<p>Contains numerous microvilli for absorption and secretion (A)</p> Signup and view all the answers

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