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Schematization of ear canal anatomy (A) and vasculature (B). In (B), numbers indicate the main vessels and specifically: the basilar artery (1), internal auditory artery (1a), internal carotid artery (2), artery of pterygoid canal (2a), carotico-tympanic artery (2b), external carotid artery (3), maxillary artery (3a), stylomastoid artery (3b), posterior auricular artery (3c), anterior tympanic artery (3d).
