The course and relations of the left phrenic nerve in the neck.
In the neck, the left phrenic nerve is in a position that corresponds exactly to that of the right phrenic nerve. Both cross and second part of the subclavian arteries. On the left side there is an additional relationship of the nerve to the subclavian artery in the thorax, where it descends in front of the first part of the artery.
D006801:Humans; D009333:Neck / Q000294:innervation*; D010791:Phrenic Nerve / Q000033:anatomy & histology*; D013348:Subclavian Artery / Q000033:anatomy & histology