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Cerebral portion of internal carotid artery : ウィキペディア英語版
Internal carotid artery

The internal carotid artery is major paired artery, one on each side of the head and neck, in human anatomy. They arise from the common carotid arteries where these bifurcate into the internal and external carotid arteries; the internal carotid artery supplies the brain, while the external carotid nourishes other portions of the head, such as face, scalp, skull, and meninges.
==Classification==
Terminologia Anatomica in 1998 subdivided the artery into four parts: "cervical", "petrous", "cavernous", and "cerebral".〔 〕 However, in clinical settings, the classification system of the internal carotid artery usually follows the 1996 recommendations by Bouthillier, describing seven anatomical segments of the internal carotid artery, each with a corresponding alphanumberic identifier -- C1 cervical, C2 petrous, C3 lacerum, C4 cavernous, C5 clinoid, C6 ophthalmic, and C7 communicating. The Bouthillier nomenclature remains in widespread use by neurosurgeons, neuroradiologists and neurologists. The segments are subdivided based on anatomical and microsurgical landmarks and surrounding anatomy, more than angiographic appearance of the artery. An alternative embryologic classification system proposed by Pierre Lasjaunias and colleagues is invaluable when it comes to explanation of many internal carotid artery variants. An older clinical classification, based on pioneering work by Fischer in 1938, is mainly of historical significance.
The segments of the internal carotid artery are as follows:
* Cervical segment, or C1, identical to the commonly used Cervical portion
* Petrous segment, or C2
* Lacerum segment, or C3
*
*C2 and C3 compose the commonly termed Petrous portion
* Cavernous segment, or C4, almost identical to the commonly used Cavernous portion
* Clinoid segment, or C5. This segment is not identified in some earlier classifications, and lies between the commonly used Cavernous portion and Cerebral or Supraclinoid portion
* Ophthalmic, or supraclinoid segment, or C6
* Communicating, or terminal segment, or C7
*
* C6 and C7 together constitute the commonly used Cerebral or Supraclinoid portion
Mnemonic for branches in skull: Please Let Children Consume Our Candy
(first letter for each branch, in order).

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Internal carotid artery」の詳細全文を読む



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