Trigeminal and facial nerve

Mind Map by , created over 5 years ago

Neurology Mind Map on Trigeminal and facial nerve, created by LewisLewis on 06/06/2014.

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Created by LewisLewis over 5 years ago
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Trigeminal and facial nerve
1 Trigeminal nerve
1.1 Sensory component
1.1.1 3 nuclei Main sensory nucleus (touch and position) Spinal nucleus of V (pain and temperature) Mesencephalic nucleus (proprioception and mechanoception from jaw and teeth)
1.2 Motor component
1.2.1 Masticatory muscles
1.3 Reflexes
1.3.1 Corneal reflex (blink reflex)
1.3.2 Jaw jerk reflex If exaggerated, it can be due to pseudobulbar palsy
1.4 3 exits
1.4.1 Superior orbital fissure
1.4.2 Foramen rotundum
1.4.3 Foramen ovale
1.5 Trigeminal neuralgia
1.5.1 Therapy Gasserian ganglion ablative technique Microvascular decompression Gamma-knife radiosurgery
1.5.2 excruciating lancinating paroxysms in the face
1.5.3 Pathogenesis compression near the entry zone due to an ectatic vascular loop
2 Facial nerve
2.1 Intracranial branches
2.1.1 Greater petrosal nerve
2.1.2 Nerve to stapedius
2.1.3 Chorda tympani
2.2 Extracranial branch
2.2.1 Posterior auricular nerve
2.2.2 Branch to posterior belly of digastric muscle and the stylohyoid muscle
2.2.3 5 major facial branches (in parotid gland)
2.3 Bell's palsy
2.3.1 Etiology Inflammation of the nerve at the geniculate ganglion -> Compression, ischemia and demyelination of the nerve viral infections (HSV in young) and vascular damage in elderly, especially diabetic patients
2.3.2 Diagnosis EMG MRI CSF
2.3.3 Therapy Protect the eye by patching and lubrication Corticosteroids Antiviral agents
2.3.4 Consequences Aberrant reinnervation of muscles and glands Synkinesis Aberrant parasympathetic reinnervation Hemifacial spasms Causes Treatment Botulinum Toxin Microvascular decompression of VII Anticonvulsants
2.3.5 sudden onset (1-5 days)
2.4 Nuclei
2.4.1 Facial nucleus Motor Lower pons
2.4.2 Nucleus solitarius
2.4.3 Superior salivatory nucleus Parasympathetic efferents to salivary glands
2.5 Peripheral VII nerve palsy
2.5.1 Signs
2.5.2 Peripheral vs Central CN VII palsy Central palsy Lesion of the corticopontine fibers
2.5.3 Causes Compressive Herpes Zoster Meningitis Autoimmune diseases Gullain-Barré Lyme disease

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