Suprarenal Medulla Quiz
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Questions and Answers

What is the origin of sympathetic supply to the suprarenal medulla?

  • Hypogastric ganglia
  • Inferior mesenteric ganglia
  • L1, L2, and L3 segments of the spinal cord
  • T10 and T11 segments of the spinal cord (correct)
  • What is the main action of adrenaline released by the suprarenal medulla?

  • Regulation of heart rate
  • Metabolic actions of the body (correct)
  • Contraction of blood vessels
  • Relaxation of blood vessels
  • What percentage of adrenaline is released by stimulation of sympathetic nerves to the suprarenal medulla?

  • 60%
  • 20%
  • 40%
  • 80% (correct)
  • Where do the sympathetic nerves to the pelvis originate?

    <p>L1, L2, and L3 segments of the spinal cord</p> Signup and view all the answers

    What is the function of sympathetic supply to the urinary bladder?

    <p>Relaxation of its wall and contraction of internal urethral sphincter</p> Signup and view all the answers

    Study Notes

    Sympathetic Supply to Suprarenal Medulla

    • The origin of sympathetic supply to the suprarenal medulla is the thoracic segments T5-T12 of the spinal cord.

    Adrenaline and Suprarenal Medulla

    • The main action of adrenaline released by the suprarenal medulla is to prepare the body for "fight or flight" responses.
    • 80% of adrenaline is released by stimulation of sympathetic nerves to the suprarenal medulla.

    Sympathetic Nerves to the Pelvis

    • The sympathetic nerves to the pelvis originate from the lumber region (L1-L2) of the spinal cord.

    Sympathetic Supply to the Urinary Bladder

    • The function of sympathetic supply to the urinary bladder is to relax the bladder wall and contract the internal urethral sphincter, allowing for urine storage.

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    Description

    Test your knowledge of the suprarenal medulla (SRM) with this quiz. Explore its origin, relay, and functions, and understand how sympathetic nerves stimulate the release of adrenaline and noradrenaline.

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