The nerve then divides into a small anterior and large posterior trunk. The palpebral fissure is widened. Beaty NB, Le TT. Sensory testing is, by nature, subjective i. During middle ear surgery, the facial nerve is most commonly injured at the pyramidal turn. The fibers for taste originate in the nucleus of the tractus solitarius NTS , and the fibers to the lacrimal, nasal, palatal mucus, and submandibular glands originate in the superior salivatory nucleus.
Facial Bone Anatomy: Overview, Mandible, Maxilla
What is Deep Vein Thrombosis? The motor division of CN V3 provides function to six muscles: Alive no evidence of disease. Facial nerve Cranial nerve VII. Still within the temporal bone, the roots leave the internal acoustic meatus, and enter into the facial canal.
The Facial Nerve (CN VII)
Description: The main function of the facial nerve is motor control of all of the muscles of facial expression. It also supplies parasympathetic innervation to the nasal mucosa and the lacrimal gland via the pterygopalatine ganglion. Clinical Anatomy by Regions Ninth ed. There is also a small amount of cutaneous sensation carried by the nervus intermedius from the skin in and around the auricle outer ear.