Vagus(CN X)

Question 1

Vagus nerves descends anterior or posterior to the common carotid arteries?

Answer 1

Posterior

Also enters mediastinum posterior to the brachiocephalic v.

Question 2

What is is the landmark of R. Vagus nerve relative to R. Subclavian artery?

Answer 2

Anterior to R. Subclavian a.

Question 3

What is the landmark of the R. Vagus nerve relative to the veins?

Answer 3

It runs posterior to the R. Brachiocephalic, SVC and root of lung(forms pulmonary plexus)

Question 4

When the R. Vagus nerve supplies the oesophagus, what does it form?

Answer 4

Oesophageal plexus

Question 5

When branch does the L. Vagus nerve give off at the aortic arch?

Answer 5

L. Recurrent laryngeal nerve

Question 6

What brach does the L. Vagus nerve give off posterior to left root of lung

Answer 6

Pulmonary plexus

Question 7

Left and right laryngeal nerves are given of at which mediastinum?

Answer 7

Superior Mediastinum

Question 8

State clearly the anatomical positions of L. and R. Recurrent Laryngeal nerves

Answer 8

R. Laryngeal - hooks around subclavian artery and passes to larynx between trachea and oesophagus

L. Laryngeal - passes inferior to arch of aorta lateral to ligamentum arteriosum and passes to larynx between trachea and oesophagus