Caroticotympanic arteries
Details
Precursoraortic arch 2
Sourcepetrous portion of the internal carotid artery
Suppliestympanic cavity
Identifiers
Latinarteriae caroticotympanicae, ramus caroticotympanicus
TA98A12.2.06.005
TA24464
FMA71691
Anatomical terminology

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.[1]: 416  It contributes arterial supply to the osseous part of the pharyngotympanic tube (Eustachian tube).[1]: 706 

Anatomy

Anastomoses

It forms anastomoses with the anterior tympanic branch of the maxillary artery, and the stylomastoid artery.[1]: 416 

Variation

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.[2] Nevertheless, its relevance to internal carotid artery pathologies supports its continued classification as a non-variation anatomical structure.[3][4] 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.[5][6]

See also

References

  1. 1 2 3 Standring, Susan (2020). Gray's Anatomy: The Anatomical Basis of Clinical Practice (42th ed.). New York. ISBN 978-0-7020-7707-4. OCLC 1201341621.{{cite book}}: CS1 maint: location missing publisher (link)
  2. ↑ Andreo, Jesus Carlos; Caldas Navarro, João Adolfo; Toledo Filho, João Lopes; de Araújo, José Carlos (2000). "Caroticotympanic Artery: Anatomically a Normal Branch or a Variation of the Internal Carotid Artery?". Cells Tissues Organs. 166 (3): 319–322. doi:10.1159/000016745. ISSN 1422-6405. PMID 10765027. S2CID 5779830.
  3. ↑ Quisling, Ronald G.; Rhoton, Albert L. (April 1979). "Intrapetrous Carotid Artery Branches: Radioanatomic Analysis". Radiology. 131 (1): 133–136. doi:10.1148/131.1.133. ISSN 0033-8419. PMID 424573.
  4. ↑ Thiers, Fabio A.; Sakai, Osamu; Poe, Dennis S.; Curtin, Hugh D. (2000-09-01). "Persistent Stapedial Artery: CT Findings". American Journal of Neuroradiology. 21 (8): 1551–1554. ISSN 0195-6108. PMC 7974054. PMID 11003295.
  5. ↑ Liu, James K.; Gottfried, Oren N.; Amini, Amin; Couldwell, William T. (November 2004). "Aneurysms of the petrous internal carotid artery: anatomy, origins, and treatment". Neurosurgical Focus. 17 (5): E13. doi:10.3171/foc.2004.17.5.13. ISSN 1092-0684. PMID 15633978.
  6. ↑ Kathuria, Sudhir; Gregg, Lydia; Chen, James; Gandhi, Dheeraj (June 2011). "Normal Cerebral Arterial Development and Variations". Seminars in Ultrasound, CT and MRI. 32 (3): 242–251. doi:10.1053/j.sult.2011.02.002. PMID 21596279.


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