Physiology of the Kidneys Quiz

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Questions and Answers

What activates the parasympathetic nervous system to lead to detrusor contraction and internal sphincter relaxation during the voiding phase?

  • Intense level stretch activating PMC (correct)
  • Nerve injury to sacral spinal cord
  • Tonic activity from PSC
  • Inhibition of external sphincter contraction

What effect does a spinal cord injury between the pons and sacral spinal segment have on micturition?

  • Prevents the bladder from emptying
  • Large volume bladder
  • Facilitates voiding
  • Overactive bladder and detrusor-sphincter dyssynergia (correct)

What percentage of Polycystic Kidney Disease (PKD) cases are due to autosomal dominant polycystic kidney disease?

  • 15%
  • 25%
  • 95%
  • 85% (correct)

Where are the genes located that code for polycystin-1 and polycystin-2 proteins in PKD?

<p>Chromosome 16 and chromosome 4 (B)</p> Signup and view all the answers

What increases the tendency to form kidney stones according to the text?

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

What are kidney stones made of typically, according to the text?

<p><strong>Calcium</strong> stones and other types like magnesium ammonium phosphate or uric acid (C)</p> Signup and view all the answers

What is the main function of the kidney?

<p>Regulates the extracellular fluid environment (B)</p> Signup and view all the answers

What happens during the storage phase of micturition?

<p>Sympathetic activation leads to detrusor relaxation (C)</p> Signup and view all the answers

Which part of the urinary system is responsible for storing urine?

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

Which hormone is secreted by the kidneys to regulate erythropoiesis?

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

What is the function of nephrons in the urinary system?

<p>Filter blood and produce urine (C)</p> Signup and view all the answers

Which division of the nervous system controls the "guarding reflex" during micturition?

<p>Somatic nervous system (A)</p> Signup and view all the answers

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