Caroticotympanic arteries
Encyclopedia
The caroticotympanic branch (tympanic branch) is small; it enters the tympanic cavity
Tympanic cavity
The tympanic cavity is a small cavity surrounding the bones of the middle ear.It is formed from the tubotympanic recess, an expansion of the first pharyngeal pouch....

 through a minute foramen in the carotid canal
Carotid canal
On the interior surface of the temporal bone, behind the rough surface of the apex, is the large circular aperture of the carotid canal, which ascends at first vertically, and then, making a bend, runs horizontally forward and medialward.-Contents:...

, and anastomoses with the anterior tympanic branch of the internal maxillary, and with the stylomastoid artery
Stylomastoid artery
The stylomastoid artery enters the stylomastoid foramen and supplies the tympanic cavity, the tympanic antrum and mastoid cells, and the semicircular canals...

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