Urinary System Functions Quiz

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Questions and Answers

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

  • Promotes Na+ reabsorption
  • Causes vasodilation
  • Opposes the actions of aldosterone (correct)
  • Increases Ca++ reabsorption

Which hormone is responsible for increasing Ca++ reabsorption and blocking phosphate reabsorption?

  • Parathyroid hormone (correct)
  • Renin
  • Natriuretic hormone
  • Aldosterone

What is the function of volume sensing mechanisms in the body?

  • Regulate calcium levels
  • Control glucose metabolism
  • Check blood pressure (correct)
  • Monitor oxygen levels

How does caffeine affect the nephron?

<p>Enhances vasodilation (B)</p> Signup and view all the answers

Which hormone indirectly controls potassium levels in the body?

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

What is the primary function of hydrogen ions in acid/base homeostasis?

<p>Maintain proper pH balance (B)</p> Signup and view all the answers

What is the role of the nephron in the kidney?

<p>Balance constituents in the blood and form urine (C)</p> Signup and view all the answers

What is the main purpose of the renal hilum?

<p>Funnels urine into the ureters (B)</p> Signup and view all the answers

What is the function of the macula densa in the kidney nephron?

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

Which part of the kidney is responsible for releasing ATP and adenosine based on plasma fluid osmolarity?

<p>Loop of Henle (C)</p> Signup and view all the answers

Why is systemic edema caused when too much protein enters the filtrate in the kidneys?

<p>Increased osmotic pressure in circulating blood (A)</p> Signup and view all the answers

What substance is actively transported by the Proximal Convoluted Tubule of the nephron?

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

What is the main function of the collecting ducts in the kidney nephron?

<p>Reabsorb water based on blood osmolarity (D)</p> Signup and view all the answers

'Tubular reabsorption' refers to substances that are reabsorbed by what mechanisms?

<p>Diffusion and secondary active transport (A)</p> Signup and view all the answers

'Polyuria' is a condition that indicates what volume of urine excretion per day?

<p>&gt;500 mL/day (C)</p> Signup and view all the answers

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