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

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

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

From which ganglia does the lesser splanchnic nerve arise?

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

What is the termination point of the lesser splanchnic nerve?

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

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

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

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

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

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

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

Which type of nerves arise from the lower ganglia?

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

What is the function of the splanchnic nerves?

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

Where do the splanchnic nerves end?

<p>In the coeliac ganglion (D)</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 (D)</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 (C)</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 (B)</p> Signup and view all the answers

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

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

Which nerve forms the posterior oesophageal plexus?

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

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

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

Which plexus is located below the root of the lung?

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

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

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

Where do the anterior and posterior oesophageal plexuses originate from?

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

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