Facial Nerve Pathways Flashcards Preview

Neuro Block 2-RG > Facial Nerve Pathways > Flashcards

Flashcards in Facial Nerve Pathways Deck (7)
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1

What are the four functional divisions of the facial nerve?

branchial motor
visceral motor
somatic sensory
visceral sensory

2

Where is the facial motor nerve nucleus located?

ventrolateral pons

3

What is so special about how the facial nerve exits the brainstem?

it goes up and over the abducens nerve

4

Damage to the facial motor nucleus causes what defect?

ipsilateral facial paralysis

5

Damage to the facial nerve causes what deficit?

ipsilateral facial paralysis

6

How does the corneal blink reflex work?

-nociceptive signals from cornea enter spinal trigeminal nucleus and synapse with 2 interneurons
-2 interneurons run to each facial motor nucleus
-motor neurons run ipsilateral to the orbicularis oculi muscles causing bilateral blinking

7

Corticalbulbar tract and facial muscles relation

superior face is innervated by corticalbulbar fibers bilaterally, inferior face is innervated only contralaterally