Caroticotympanic arteries

Details
Precursor| aortic arch 2
Source| petrous portion of the internal carotid artery
Supplies| tympanic cavity
Identifiers
Latin| arteriae caroticotympanicae, ramus caroticotympanicus
TA98| A12.2.06.005
TA2| 4464
FMA| 71691
Anatomical terminology

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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[edit]

### Anastomoses[edit]

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

### Variation[edit]

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[edit]

* Caroticotympanic nerves

## References[edit]

1. ^ a b c 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.

## External links[edit]

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Arteries of the head and neck

CCA|

| ECA|

| sup. thyroid|

* superior laryngeal
* sternocleidomastoid branch
* infrahyoid branch
* cricothyroid branch
* glandular branches

|

asc. pharyngeal|

* posterior meningeal
* pharyngeal branches
* inferior tympanic

lingual|

* suprahyoid
* dorsal lingual
* deep lingual
* sublingual

facial|

* cervical branches (ascending palatine, tonsillar, submental, glandular)
* facial branches (inferior labial
* superior labial / nasal septum
* lateral nasal
* angular)

occipital|

* sternocleidomastoid
* meningeal
* occipital
* auricular
* descending

post. auricular|

* stylomastoid
* stapedial
* auricular
* occipital

supf. temporal|

* transverse facial
* middle temporal (zygomatico-orbital)
* anterior auricular
* frontal
* parietal

maxillary|

| 1st part / mandibular|

* anterior tympanic
* deep auricular
* middle meningeal (superior tympanic, petrosal)
* accessory meningeal
* inferior alveolar

|

2nd part / pterygoid|

* to muscles of mastication (deep temporal, pterygoid, masseteric)
* buccal

3rd part / pterygopalatine|

* posterior superior alveolar
* infraorbital (anterior superior alveolar)
* descending palatine (greater palatine, lesser palatine)
* artery of the pterygoid canal
* sphenopalatine (posterior septal branches, posterior lateral nasal)
* pharyngeal

ICA|

| cervical|

* carotid sinus

|

petrous|

* Vidian
* caroticotympanic

cavernous/
ophthalmic|

* orbital group:anterior ethmoidal
* posterior ethmoidal
* lacrimal (lateral palpebral)
* medial palpebral
* terminal (supraorbital, supratrochlear, dorsal nasal)

ocular group: central retinal

* ciliary (short posterior, long posterior, anterior)
* Circulus arteriosus major
* hypophysial (superior, inferior)

brain|

* Circle of Willis
* ACA (anterior communicating, Recurrent artery of Heubner, Orbitofrontal artery)
* MCA (anterolateral central, Prefrontal artery, Superior terminal branch, Inferior terminal branch, Anterior temporal branch)
* posterior communicating
* anterior choroidal

ScA|

| vertebral artery|

* meningeal
* spinal (posterior, anterior)
* basilar: pontine
* labyrinthine
* cerebellar (AICA, SCA, PICA)
* cerebral (PCA)

|

thyrocervical trunk|

| inferior thyroid|

* inferior laryngeal
* tracheal
* esophageal
* ascending cervical
* pharyngeal
* glandular branches

|

transverse cervical|

* superficial branch
* deep branch / dorsal scapular
* scapular anastomosis

suprascapular|

* acromial branch
* scapular anastomosis

costocervical trunk|

* deep cervical
* Supreme Intercostal artery

Authority control databases |

* Terminologia Anatomica

|

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