The vagus nerve:

Let’s carefully analyze each option about the vagus nerve:

A. the right vagus nerve is in contact with the trachea
✅ True – The right vagus nerve descends on the right side of the trachea, giving branches to the tracheal plexus.

B. passes in front of the lung root
❌ False – Both vagus nerves pass behind the root of the lung (the phrenic nerves pass in front).

C. the right recurrent laryngeal branch hooks around the right subclavian artery
✅ True – The right recurrent laryngeal nerve loops under the right subclavian artery and ascends in the tracheoesophageal groove.

D. passes through the vena caval forearm
❌ False – This looks like a typo: should be foramen. The right phrenic nerve, not the vagus, passes through the caval opening of the diaphragm. The vagus passes through the esophageal hiatus.

E. the right vagus nerve supplies branches to the superficial cardiac plexus
❌ False – The left vagus nerve contributes to the superficial cardiac plexus (via a branch from the left vagus and left sympathetic trunk near the aortic arch). The right vagus contributes mainly to the deep cardiac plexus.


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✅ Correct options: A and C