Educational objective: The facial nerve (CN VII) exits the sty | Embryology Videos & Books 2021

Educational objective: The facial nerve (CN VII) exits the stylomastoid foramen and courses through the substance of the parotid gland, where it divides into its 5 terminal branches that innervate the muscles of facial expression. Malignant tumors of the parotid gland often compress and disrupt the facial nerve and its branches, causing ipsilateral facial droop.