CN IX- Glossopharyngeal Nerve

Question 1

Characteristic of CN IX

Answer 1

Fibers emerge from the medulla, leave the skull via the jugular foramen, and run to the throat

Question 2

CN IX Pathway

Answer 2

Question 3

Type of Nerve

Answer 3

Motor & Sensory

Question 4

Muscle Innervation

Answer 4

Innervates part of the tongue and pharynx, and provides motor fibers to the parotid salivary gland

Question 5

Sensory Impulses

Answer 5

Fibers conduct taste and general sensory impulses from the tongue and pharynx

Question 6

Clinical Application

Answer 6

Cranial Nerve IX Palsy

Loss of sensation (taste & general) in post 1/3 of tongue
Unilateral lost of gag reflex
Difficulty in swallowing

Question 7

2-minutes CN IX

Answer 7

2-Minute Neuroscience: Glossopharyngeal Nerve (Cranial Nerve IX)

Adapted from Neuroscientifically Challenged | YouTube Channel