CN X: vagus nerve

Question 1

what is the sensory innervation of the vagus nerve?

Answer 1

the skin of the external auditory meatus
lining of the laryngopharynx and larynx
visceral sensation to heart and abdominal viscera

Question 2

what is the motor innervation of the vagus nerve?

Answer 2

muscles of the pharynx, soft palate and larynx

Question 3

what is the parasympathetic innervation of the vagus nerve?

Answer 3

smooth muscle of trachea, bronchi and GI
regulates heart rhythm

Question 4

what s&s occur when the vagus nerve is damaged?

Answer 4

decreased gag reflex
vocal changes (nasal voice)
HR and BP regulation issues
poor digestion
pain in external auditory meatus
dysphagia