Advanced Posterior Mediastinum Quiz

Q1. Where does the thoracic duct usually cross from right to left?

• Near T12
• Near T1
• Near T5
• Near L4

Q2. Between which major structures does the thoracic duct ascend inferiorly?

• SVC and pulmonary trunk
• Aorta and IVC
• Aorta and azygos vein
• Trachea and sternum

Q3. Which vagus nerve contributes mainly to the anterior vagal trunk?

• Left phrenic nerve
• Right vagus nerve
• Right phrenic nerve
• Left vagus nerve

Q4. Which vagus nerve contributes mainly to the posterior vagal trunk?

• Right vagus nerve
• Left vagus nerve
• Left phrenic nerve
• Right phrenic nerve

Q5. Which thoracic splanchnic nerve commonly arises from T5-T9 sympathetic ganglia?

• Lesser splanchnic nerve
• Least splanchnic nerve
• Phrenic nerve
• Greater splanchnic nerve

Q6. Which thoracic splanchnic nerve commonly arises from T10-T11?

• Least splanchnic nerve
• Lesser splanchnic nerve
• Vagus nerve
• Greater splanchnic nerve

Q7. Which thoracic splanchnic nerve is commonly associated with T12?

• Least splanchnic nerve
• Recurrent laryngeal nerve
• Lesser splanchnic nerve
• Greater splanchnic nerve

Q8. Which structure is typically anterior to the thoracic duct in the posterior mediastinum?

• Vertebral bodies
• Esophagus
• Posterior longitudinal ligament
• Spinal cord

Q9. Which vessels cross the midline posterior to the aorta to reach the azygos vein?

• Brachiocephalic veins
• Internal thoracic veins
• Hemiazygos veins
• Pulmonary veins

Q10. Which list best represents major contents of the posterior mediastinum?

• Esophagus, aorta, thoracic duct, azygos system
• Lungs, bronchioles, alveoli, pleura only
• Trachea, SVC, aortic arch, thymus only
• Heart, pulmonary trunk, ascending aorta, thymus