posterior auricular artery
This small artery arises from the back of the external
carotid artery above the level of the posterior belly of the digastric.
It reaches the interval between the mastoid process (see mastoid
bone). It reaches the interval between the mastoid process and the back
of the auricle, and then accompanies the posterior auricular nerve. Besides
twigs to muscles and to the parotid gland, it gives off the stylomastoid
artery, which enters the stylomastoid foramen to be distributed
in the interior of the temporal bone.
|The posterior auricular artery in
relation to the external carotid and its branches