Stylomastoid artery

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Artery: Stylomastoid artery
Gray508.png
The arteries of the face and scalp.
Latin arteria stylomastoidea
Gray's p.557
Supplies tympanic cavity, tympanic antrum, mastoid cells, semicircular canals
Source posterior auricular 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.

It anastomoses with the superficial petrosal branch of the middle meningeal artery by a twig which enters the hiatus canalis facialis.

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This article incorporates text from a public domain edition of Gray's Anatomy.