<prompt> All are true about right phrenic nerve except?Motor branchSensory branchArises from C4Longer course than left Phrenic nerve  <response>: The phrenic nerve is a mixed nerve which gives its sole motor supply to the diaphragm. Arises from C3-5 mainly from C4 the right phrenic nerve is shoer and more veical than left. Ref: BD Chaurasia 4th ed vol 2 Page 311 