Posterior Auricular Artery

Question 1

Describe the course of PAA.

Answer 1

It arises from the posterior aspect of the ECA above the posterior belly of digastric muscle and runs along its upper border.

Question 2

What are the branches of the PAA?

Answer 2

Auricular branch to posterior surface of the auricle, occipital branch to the scalp above and behind the auricle and stylomastoid artery in 40% of cases which supplies the middle ear.