• Source: Caroticotympanic arteries

The caroticotympanic artery (tympanic branch) is a small, sometimes doubled artery which arises from (the petrous portion of) the internal carotid artery. It leaves the carotid canal through a foramen to reach the tympanic cavity.: 416  It contributes arterial supply to the osseous part of the pharyngotympanic tube (Eustachian tube).: 706 




Anatomy






= Anastomoses

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It forms anastomoses with the anterior tympanic branch of the maxillary artery, and the stylomastoid artery.: 416 




= Variation

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Because the caroticotympanic artery is more often absent than present, some controversy exists as to whether these are should be classified as an anatomical variation. Nevertheless, its relevance to internal carotid artery pathologies supports its continued classification as a non-variation anatomical structure. Additionally, the origin of the caroticotympanic artery as a vestige of the embryonic hyoid artery provides a developmental reason for its continued classification as a canonical branch.




See also


Caroticotympanic nerves




References






External links

Kata Kunci Pencarian:

• Caroticotympanic arteries
• Caroticotympanic
• Internal carotid artery
• Caroticotympanic nerves
• Ascending pharyngeal artery
• Persistent stapedial artery
• Inferior tympanic artery
• Anterior tympanic artery
• Middle superior alveolar artery