Tags: Anatomical Structure, Artery.
The stylomastoid artery enters the stylomastoid foramen and supplies the tympanic cavity the tympanic antrum and mastoid cells and the semicircular canals. It is a branch of the posterior auricular artery and thus part of the external carotid arterial system.In the young subject a branch from this vessel forms with the anterior tympanic artery from the internal maxillary a vascular circle which surrounds the tympanic membrane and from which delicate vessels ramify on that membrane.
