Thoracic Anatomy: Vagus Nerve and Sympathetic Chain
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Questions and Answers

What is the term for the compression of the vagus nerve by an aortic aneurysm or enlarged tracheobronchial lymph nodes?

  • Vagus nerve compression disorder
  • Thoracic ganglion compression
  • Mediastinal syndrome (correct)
  • Sympathetic chain syndrome
  • How many ganglia are typically present in the thoracic part of the sympathetic chain?

  • 10
  • 11 or 12 (correct)
  • 15
  • 13
  • What is the name of the ganglion formed by the fusion of the 15th thoracic ganglion and the inferior cervical sympathetic ganglion?

  • Stellate ganglion (correct)
  • Lumbar ganglion
  • Thoracic ganglion
  • Cervical ganglion
  • Where does the thoracic sympathetic chain lie in the posterior mediastinum?

    <p>Most laterally placed structure</p> Signup and view all the answers

    What is the number of rami communicantes that connect each sympathetic ganglion to the corresponding thoracic spinal nerve?

    <p>2</p> Signup and view all the answers

    Above which part does the thoracic part of the sympathetic chain continue?

    <p>Cervical part</p> Signup and view all the answers

    From which ganglia does the lesser splanchnic nerve arise?

    <p>The 9th and 10th ganglia</p> Signup and view all the answers

    What is the termination point of the lesser splanchnic nerve?

    <p>The ganglia of the renal plexus</p> Signup and view all the answers

    Which nerve runs the same course as the greater splanchnic nerve?

    <p>The lesser splanchnic nerve</p> Signup and view all the answers

    How many ganglia are involved in the origin of the lowest splanchnic nerve?

    <p>One ganglion</p> Signup and view all the answers

    What is the name of the ganglion where the greater splanchnic nerve terminates?

    <p>The aorticorenal ganglion</p> Signup and view all the answers

    Which type of nerves arise from the lower ganglia?

    <p>Vascular and visceral branches</p> Signup and view all the answers

    What is the function of the splanchnic nerves?

    <p>Carrying preganglionic efferent and visceral sensory afferent fibers</p> Signup and view all the answers

    Where do the splanchnic nerves end?

    <p>In the coeliac ganglion</p> Signup and view all the answers

    What is the path of the greater splanchnic nerve?

    <p>It arises from the upper ganglia and travels downwards to the abdominal cavity</p> Signup and view all the answers

    What is the relationship between the sympathetic chain and the ganglia?

    <p>The ganglia are located along the sympathetic chain</p> Signup and view all the answers

    What is the function of the vascular and visceral branches?

    <p>To supply the abdominal viscera with blood</p> Signup and view all the answers

    Which plexus is mainly formed by the parasympathetic fibres from the vagus nerve?

    <p>Anterior oesophageal plexus</p> Signup and view all the answers

    Which nerve forms the posterior oesophageal plexus?

    <p>Left vagus nerve</p> Signup and view all the answers

    What is the origin of sympathetic fibres in the cardiac plexus?

    <p>Upper 5 thoracic ganglia</p> Signup and view all the answers

    Which plexus is located below the root of the lung?

    <p>Inferior pulmonary plexus</p> Signup and view all the answers

    What type of fibres are found in the posterior pulmonary plexus?

    <p>Both parasympathetic and sympathetic fibres</p> Signup and view all the answers

    Where do the anterior and posterior oesophageal plexuses originate from?

    <p>Vagus nerve and thoracic ganglia</p> Signup and view all the answers

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