CN X- Vagus Nerve

Question 1

Characteristic of CN X

Answer 1

The only cranial nerve that extends beyond the head and neck

Fibers emerge from the medulla via the jugular foramen

Question 2

CN X Pathway

Answer 2

Question 3

Type of Nerve

Answer 3

Motor & Sensory

Question 4

Muscle Innervation

Answer 4

Most motor fibers are parasympathetic fibers to the heart, lungs, and visceral organs

Question 5

Sensory Impulses

Answer 5

Taste

Question 6

Clinical Application

Answer 6

Lesion of CN X

1. External & recurrent laryngeal nerve are branches of vagus nerve
2. Injury during thyroid surgery
3. External laryngeal nerve injury causes husky voice
4. Recurrent laryngeal nerve injury causes voice hoarseness

Question 7

2-minute CN X

Answer 7

2-Minute Neuroscience: Vagus Nerve (Cranial Nerve X)

Adapted from Neuroscientifically Challenged | YouTube Channel