Cranial Nerve Palsy - IX : Glossopharyngeal Nerve

Question 1

Sensory Functions of the Glossopharyngeal Nerve.

Answer 1

1. Posterior 1/3 Tongue (Lingual BRANCH).
2. External Ear and Middle Ear.
3. Carotid Body and Sinus.

Question 2

Motor Functions of the Glossopharyngeal nerve (2).

Answer 2

1. Parotid Gland.

2. Stylopharyngeus (shorten/widen pharynx and elevate larynx).

Question 3

Gag Reflex (2).

Answer 3

1. Afferent Limb : Glossopharyngeal nerve.

2. Efferent Limb : Vagus Nerve.

Question 4

Clinical Features of Glossopharyngeal Nerve Palsy (2).

Answer 4

1. Hypersensitive Carotid Sinus Reflex.

2. Loss of Gag Reflex.