Posterior triangle (cervical) contents

Contents of the posterior triangle (courtesy of Alexa)

PEOPLE SAY COFFEE BRINGS SOME EXTRA SMILES, TRUE STORY

P: Phrenic nerve
S: Spinal accessory nerve

C: Cervical plexus
B: Brachial plexus

S: Subclavian vein
E: External jugular vein

S: Subclavian artery
T: Transverse cervical artery
S: Suprascapular artery