Hypoglossal Nerve: Difference between revisions

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== examination ==
== examination ==
ask the patient to protrude the tongue and move it in all directions.  
ask the patient to protrude the tongue and move it in all directions.  
{{#ev: youtube =|e6X8vMYTSHs}}<ref>physiotutors.Cranial Nerve 12 | Hypoglossal Nerve Assessment for Physiotherapists.availble from :https://www.youtube.com/watch?v=e6X8vMYTSHs
{{#ev: youtube =|e6X8vMYTSHs}}<ref> physiotutors. Cranial Nerve 12 | Hypoglossal Nerve Assessment for Physiotherapists.available from https://www.youtube.com/watch?v=e6X8vMYTSHs


== lesion  ==
== lesion  ==

Revision as of 03:51, 3 February 2021

Introduction[edit | edit source]

it is the 12 cranial nerves that originate from the medulla obligate of the brain stem.


innervation[edit | edit source]

it gives only somatic motor innervation for all extrinsic and intrinsic muscles of the tongue except the palatoglossus, innervated by the vagus nerve.

examination[edit | edit source]

ask the patient to protrude the tongue and move it in all directions.

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<ref> physiotutors. Cranial Nerve 12 | Hypoglossal Nerve Assessment for Physiotherapists.available from https://www.youtube.com/watch?v=e6X8vMYTSHs

lesion[edit | edit source]

1/ UMNL: unilateral: deviation of the tongue to the opposite side of the lesion. bilateral: inability to protrude the tongue. note in both cases there is no wasting or fasciculation 2/LMNL: unilateral: deviation of the tongue to the side of the lesion.

bilateral:  inability to protrude the tongue.

note in both cases there is wasting and fasciculation.