Facial nerve examination

The facial nerve is a mixed nerve that attaches to the brain at the lateral part of the medullary pons, enters the inner ear canal through the inner ear portal, passes through the facial nerve tube that bends in the bone of the temporal bone rock, and finally exits the stem pores and leaves the skull. Facial nerve contains: (1) special visceral efferent fibers mainly dominate expression muscles; (2) general visceral efferent fibers; (3) special visceral afferent fibers; (4) general visceral afferent fibers; (5) general somatic sensory fibers . Facial nerve examination includes two parts: exercise and taste examination.