The nerves of the scalp, face, and side of neck. To avoid damage procedures should be deep to the SMAS e. Lesions affecting the facial nerve distal to the decussation can be mistaken for peripheral facial palsies; however, these are rare. Conflict of Interests The authors declare that they have no conflict of interests. The facial nerve supplies motor and sensory innervation to the muscles formed by the second pharyngeal arch, including the muscles of facial expressionthe posterior belly of the digastric, stylohyoid and stapedius.
Muscles of facial expressionposterior belly of digastricstylohyoidstapedius Special sensory:
Facial Nerve (CN VII)
Further technological advancements in sensitivity and automation of the technique will likely lead to its greater clinical use. Normal facial nerve on MRI. Head and Neck Imaging. Ventral pontine infarcts are the most common type and are due to ischemia of the anteromedial and anterolateral pontine arteries, which supply the corticospinal tract, medial lemniscus, and cranial nerve nuclei. Axial CT images a — c demonstrate abnormal facial nerve canal tympanic segment coursing posterolaterally to the middle ear cavity arrowsinstead of the normal posteromedial course. The infraorbital and buccal branches may also variably contribute to the inferior orbicularis. It then passes between the posterior belly of the digastric muscle and the stylohyoid musclesupplying both and the enters the parotid gland.