Cranial Nerve Palsy - X : Vagus Nerve

Question 1

Sensory Functions of Vagus Nerve.

Answer 1

1. External Ear.
2. Larynx.
3. Pharynx.
4. Thoracic and Abdominal Viscera.
5. Taste at Epiglottis in Tongue.

Question 2

Motor Functions of Vagus Nerve.

Answer 2

Smooth Muscles of Pharynx and Larynx and GI Tract.

Question 3

Anatomical Course of Vagus Nerve.

Answer 3

1. Carotid Sheath with Internal Jugular Vein and Common Carotid Artery.
2. Left - Posterior Between Common Carotid and Subclavian Artery but Right - Anterior to Subclavian Artery.
3. Left - Anterior Vagal Trunk; Right - Posterior Vagal Trunk.

Question 4

Clinical Features of Vagus Nerve Palsy.

Answer 4

1. Uvula Deviates Away From Lesion.

2. Loss of Gag Reflex.