Hypoglossal Nerve: Difference between revisions
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== Introduction == | |||
it is the 12 cranial nerves that originate from the medulla obligate of the brain stem. | |||
== innervation == | |||
it gives only somatic motor innervation for all extrinsic and intrinsic muscles of the tongue except the palatoglossus, innervated by the vagus nerve. | |||
== examination == | |||
ask the patient to protrude the tongue and move it in all directions. | |||
== lesion == | |||
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. | |||
Revision as of 03:33, 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.
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.
