The Vagus nerve CNX Flashcards
WHat is the GSA functions of CNX?
General somatic afferent (GSA, sensory) innervation of the laryngopharynx, larynx and root of the tongue
What SVA function is due to CNX?
Special visceral afferent (SVA, taste) innervation of the root of the tongue and epiglottal taste buds
What GVA is due to CNX?
general visceral afferent (GVA, sensory) innervation of thoracic and abdominal organs
WHat GVE (parasympathetic) is due to CNX?
general visceral efferent (GVE, parasympathetic) innervation to thoracoabdominal organs
What SVE (brachiomotor) is due to CNX?
Palatoglossus muscle of the tongue and several muscles of the soft palate, pharynx and larynx
Where does CNX exit the skull?
Jugular foramen
Which vagus nerve (nervus vagus, CN X) nucleus provides the motor fibers that innervate the musculature of the larynx and the muscles of the pharynx?
NUcleus ambiguus
In which of the following nuclei do the afferent fibers of the vagus nerve (nervus vagus, CN X) terminate?
solitary nucleus and tract
Which branch of the vagus nerve (nervus vagus, CN X) contributes to the esophageal plexus?
Anterior vagal trunk
Which branches of the vagus nerve (nervus vagus) supply the larynx?
- recurrrent laryngeal nerve and
- superior laryngeal nerve
Which musle is paralysed in damaging the superior laryngeal branch and what is the effect?
Cricothyroid muscle.
Lower pitched, weak, breathy and jittery voice.
Which nervebranch from CNX is causing hoarse voice if damaged?
The laryngeus recurrens.
The Vagus nerve keeps its nuclei in the jugular ganglion, but before exiting the jugular foramen it synapse on another ganglion. Which?
The inferior ganglion of the Vagal nerve
