Advanced Left Subclavian Artery Quiz

Q1. Which nerve loops beneath the right subclavian artery but not the left subclavian artery?

• Right recurrent laryngeal nerve
• Right phrenic nerve
• Left phrenic nerve
• Left recurrent laryngeal nerve

Q2. Which nerve loops under the aortic arch medial to the left subclavian artery?

• Right recurrent laryngeal nerve
• Right vagus nerve
• Left phrenic nerve
• Left recurrent laryngeal nerve

Q3. Which vessel arches over the cervical pleura near the root of the neck?

• Facial artery
• External carotid artery
• Subclavian artery
• Internal carotid artery

Q4. Which neural structure accompanies the subclavian artery through the interscalene interval?

• Vagus nerve
• Recurrent laryngeal nerve
• Phrenic nerve
• Brachial plexus

Q5. Which vessel does not pass through the interscalene interval with the subclavian artery?

• None of these
• Brachial plexus trunks
• Subclavian vein
• Subclavian artery

Q6. What is subclavian steal syndrome?

• Occlusion of the pulmonary artery
• Rupture of the carotid sinus
• Reversed vertebral flow from proximal stenosis
• Obstruction of the thoracic duct

Q7. A stenosis proximal to the left vertebral artery origin may reverse flow in which artery?

• Right common carotid artery
• Left vertebral artery
• Internal thoracic vein
• Left external carotid artery

Q8. Compression of the subclavian artery in the thoracic outlet may reduce which peripheral pulse?

• Posterior tibial pulse
• Radial pulse
• Femoral pulse
• Popliteal pulse

Q9. Which embryonic vessel contributes to the proximal left subclavian artery?

• Left seventh intersegmental artery
• Left sixth arch artery
• Right fourth arch artery
• Left vitelline artery

Q10. Which feature distinguishes the left subclavian artery from the right subclavian artery proximally?

• Termination as the brachial artery
• Absence of a vertebral branch
• Direct origin from the aortic arch
• Passage through the aortic hiatus