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Posterior commissure
・ Posterior commissure of labia majora
・ Posterior communicating artery
・ Posterior compartment
・ Posterior compartment of leg
・ Posterior compartment of the forearm
・ Posterior compartment of thigh
・ Posterior cord
・ Posterior cord syndrome
・ Posterior cortical atrophy
・ Posterior cranial fossa
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・ Posterior cruciate ligament injury
・ Posterior cutaneous


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Posterior commissure : ウィキペディア英語版
Posterior commissure

The posterior commissure (also known as the epithalamic commissure) is a rounded band of white fibers crossing the middle line on the dorsal aspect of the upper end of the cerebral aqueduct. It is important in the bilateral pupillary light reflex.
Its fibers acquire their medullary sheaths early, but their connections have not been definitively determined. Most of them have their origin in a nucleus, the ''nucleus of the posterior commissure'' (nucleus of Darkschewitsch), which lies in the central gray substance of the upper end of the cerebral aqueduct, in front of the oculomotor nucleus.
Some are probably derived from the posterior part of the thalamus and from the superior colliculus, whereas others are believed to be continued downward into the medial longitudinal fasciculus.
The posterior commissure interconnects the pretectal nuclei, mediating the consensual pupillary light reflex.
==Additional Images==

File:Slide8qq.JPG|Posterior commissure


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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