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Cranial nerves

cranial nerves

QuestionAnswer
What are the functions of the glossopharyngeal nerve CN 9 Sensory- Posterior 1/3 of tongue, taste. Also senses carotid sinus barorecptors Motor- Innervates the stylopharyngeus m. Parasympathetic- secretomotor
Glossopharyngeal nerve CN 9 originates from what part of the brain, exits where in the skull From the medulla oblongata, extis the jugular foramen, and is between the internal and external carotid arteries.
Results of injury to CN 9 Loss of gag reflex and taste.
Impulse from Vagus Nerve Mixed nerve- Sensory- skin of ext. acoustic meatus, Motor- pharynx, larynx, and esophagus, parasympathetic- Heart, respiratory system, digestive, and kidney
Course and exit of CN 10 From the medulla through jugular foramen
What are the branches of the Vagus nerve Meningeal, Auricular, Pharyngeal, superior laryngeal or called internal branch, External laryngeal goes to cricothyroid m. , cardiac plexus, recurrent laryngeal
Results of an injured vagus nerve? Can talk, but weakly, hoarse voice, sagging of the soft palate. deviation of th uvula to the normal side. resp. or heart problems.
CN 11 is carries what types of impulses Motor only to SCM and trapezius
CN 11 is from what structure (cranial)_ and passes through what hole Jugular foramen and from the medulla oblongata in the cranial roots, spinal are C1-5.
The motor nerve of the tongue is what cranial nerve Hypoglossal CN 12
CN 12 innervates what type of tongue muscles Intrinsic and extrinsic. Styloglossus, hypoglossus, genioglossus.
CN 12 hypoglossal exits through where? The hypoglossal canal and is from the medulla
Injury to CN 12 presents with Atrophy of the tongue and deviatio of tongue to side of lesion
Where does the Cervical Sympathetic trunk lie Behind the common and internal carotid arteries. on the prevertebral muscles (longus coli and longus capitis)
From where to does the cervical sympathetic trunk receive its innervation Preganglionic fibers from T1 and T2.
Internal carotid Nerve carries what information Postsynaptic sympathetic to internal carotid artery to form periarterial plexus
What landmark is present for middle cervical ganglion? C6 cricoid cartilage
Inferior cervical ganglion is also called what? The stellate or cervicothoracic ganglion.
What is Horner's Syndrome Injury to the cervical sympathetic chain. Patient may have drooping eye, vasodilation and absense of sweating on face and neck from lack of sympathetic stimulation on blood vessels and sweat glands. and miosis or contraction of pupils.
Created by: tiberius