| | Conditions Treatments | Brain Nervous System Most descriptive of the phrenic nerve? Phrenic nerve arises primarily from anterior rami of C4 and receives contributions from C3 and C5. It is solely motor in function. Brain Nervous System - Related Articles Is staring into space bad for the brain? How to Remove Skin Tags Using Dental Floss What Causes Cross Modality in Synesthesia? Current & Future Treatment Options for Painful Diabetic Neuropathy Antiretroviral Therapy What can make you walk better after dislocating your knee? Child Leukemia Symptoms