Magnetic Resonance Imaging of Cranial Nerve VII

Perry, Jonathan R.; Hasso, Anton N.

doi:10.1097/00002142-199606000-00003

Cited by 8 publications

(3 citation statements)

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“…Ipsilateral hyperacusis is found in 14% of cases. [1][2][3] The evaluation of a patient with a seventh cranial nerve palsy generally consists of a thorough medical history and physical examination looking for an identifiable etiology. Laboratory or radiographic studies are considered unnecessary when the presentation is typical.…”

Section: Discussionmentioning

confidence: 99%

Pontine Hemorrhage Presenting as an Isolated Facial Nerve Palsy

Sherman

Thompson

2005

Annals of Emergency Medicine

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Section: Discussionmentioning

confidence: 99%

Pontine Hemorrhage Presenting as an Isolated Facial Nerve Palsy

Sherman

Thompson

2005

Annals of Emergency Medicine

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“…However, at the geniculum of the facial canal, its course changes abruptly, and it runs posteriorly and slightly laterally, forming an acute angle of variable degree but usually not less than 75 . This turn in the nerve is also known as the first genu (Figures 3b,c) (Perry & Hasso, 1996;Phillips & Bubash, 2002;Proctor, 1991;Swartz, 1984). Proximal to this turn, the facial canal is anterior to the vestibule; but once it turns, its course runs lateral to the vestibule.…”

Section: The Tympanic Segmentmentioning

confidence: 99%

Microsurgical anatomy of the facial nerve

et al. 2020

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The facial nerve connections and pathways from the cortex to the brainstem are intricate and complicated. The extra-axial part of the facial nerve leaves the lateral part of the pontomedullary sulcus and enters the temporal bone through the internal acoustic meatus. In the temporal bone, the facial nerve branches into fibers innervating the glands and tongue. After it emerges from the temporal bone it supplies various facial muscles. It contains a motor, general sensory, special sensory, and autonomic components. The physician needs comprehensive knowledge of the anatomy and courses of the facial nerve to diagnose and treat lesions and diseases of it so that surgical complications due to facial nerve injury can be avoided. This review describes the microsurgical anatomy of the facial nerve and illustrates its anatomy in relation to the surrounding bone, connective, and neurovascular structures. K E Y W O R D S anatomy, facial nerve, labyrinth, temporal bone The course of the facial nerve is one of the most intricate among cranial nerves. The facial nerve has a motor and sensory roots, the latter being the intermediate nerve. The motor root supplies the muscles of the face, scalp, and auricle, and the buccinator, platysma, stapedius, stylohyoid, and the posterior belly of the digastric muscle. The sensory root conveys the chorda tympani from the tongue, palatine, and greater petrosal nerve, and taste fibers from the soft palate. It also carries the preganglionic parasympathetic (secretomotor) innervation of the submandibular and sublingual salivary glands, lacrimal glands, and glands of the nasal and palatine mucosa. Clinicians, including neurosurgeons, otologists, and head and neck surgeons need a comprehensive knowledge of the facial nerve. This nerve is divided into eight segments: intra-brainstem, root exit zone, cisternal, meatal, labyrinthine, tympanic, mastoid, and extra-temporal.

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“…While traversing the pons, these motor fibers intersect with special visceral sensory fibers originating from the solitary nucleus, responsible for taste sensation. They also intersect with parasympathetic motor fibers that regulate salivary gland function [106]. The nerve enters the temporal bone through the internal auditory meatus.…”

Section: Cranial Nerve Vii: Facial Nervementioning

confidence: 99%

On the Cranial Nerves

Libreros-Jiménez,

Manzo,

Rojas-Durán

et al. 2023

NeuroSci

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The twelve cranial nerves play a crucial role in the nervous system, orchestrating a myriad of functions vital for our everyday life. These nerves are each specialized for particular tasks. Cranial nerve I, known as the olfactory nerve, is responsible for our sense of smell, allowing us to perceive and distinguish various scents. Cranial nerve II, or the optic nerve, is dedicated to vision, transmitting visual information from the eyes to the brain. Eye movements are governed by cranial nerves III, IV, and VI, ensuring our ability to track objects and focus. Cranial nerve V controls facial sensations and jaw movements, while cranial nerve VII, the facial nerve, facilitates facial expressions and taste perception. Cranial nerve VIII, or the vestibulocochlear nerve, plays a critical role in hearing and balance. Cranial nerve IX, the glossopharyngeal nerve, affects throat sensations and taste perception. Cranial nerve X, the vagus nerve, is a far-reaching nerve, influencing numerous internal organs, such as the heart, lungs, and digestive system. Cranial nerve XI, the accessory nerve, is responsible for neck muscle control, contributing to head movements. Finally, cranial nerve XII, the hypoglossal nerve, manages tongue movements, essential for speaking, swallowing, and breathing. Understanding these cranial nerves is fundamental in comprehending the intricate workings of our nervous system and the functions that sustain our daily lives.

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Magnetic Resonance Imaging of Cranial Nerve VII

Cited by 8 publications

References 0 publications

Pontine Hemorrhage Presenting as an Isolated Facial Nerve Palsy

Pontine Hemorrhage Presenting as an Isolated Facial Nerve Palsy

Microsurgical anatomy of the facial nerve

On the Cranial Nerves

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