Plan of the facial and intermediate nerves and their communication with other nerves. About Blog Go ad-free. See facial nerve branches mnemonic here. Innervates the muscles of facial expression, the posterior belly of the digastric, the stylohyoid and the stapedius muscles. Extracranial lesions occur during the extracranial course of the facial nerve distal to the stylomastoid foramen.
General visceral efferent fibres:
The parasympathetic fibres of the facial nerve are carried by the greater petrosal and chorda tympani branches. The lingual branch of the mandibular division V3 of CN V supplies non-taste sensation pressure, heat, texture from the anterior part of the tongue via general visceral afferent fibers. Pharyngeal branch pharyngeal plexus Superior laryngeal external internal Recurrent laryngeal Superior cervical cardiac. Where does the facial nerve divide into its terminal motor branches? Voluntary facial movements, such as wrinkling the brow, showing teeth, frowning, closing the eyes tightly inability to do so is called lagophthalmos pursing the lips and puffing out the cheeks, all test the facial nerve. Figure 9 Figure 9. Plan of the facial and intermediate nerves and their communication with other nerves.