The facial nerve is the 7th cranial nerve. It's branches innervate the muscles of facial expression. It is deep and it takes a deep cut to sever it's branches u

The facial nerve is the 7th cranial nerve. It's branches innervate the muscles of facial expression. It is deep and it takes a deep cut to sever it's branches usually through muscle. Most of the scars are horizontal and I dont think I have seen one associated with a facial palsy.