後交連
WordNet
- located at or near or behind a part or near the end of a structure
- a bundle of nerve fibers passing from one side to the other of the brain or spinal cord
PrepTutorEJDIC
- Peace Corps 平和部隊
- 《名詞の前にのみ用いて》(生物学的に,位置が)後ろの,後部の / (時間・順序が)後の;(…より)後の《+『to』+『名』》(later) / しり(buttocks)
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2013/10/28 23:16:55」(JST)
[Wiki en表示]
Brain: Posterior commissure |
Mesal aspect of a brain sectioned in the median sagittal plane. (Posterior commissure labeled at upper right.)
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Median sagittal section of brain. The relations of the pia mater are indicated by the red color. (Label for posterior commissure is at center top.)
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Latin |
commissura posterior |
Gray's |
subject #189 812 |
NeuroNames |
hier-475 |
NeuroLex ID |
birnlex_1026 |
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[edit]
See also[edit]
External links[edit]
- Overview at www.mrc-cbu.cam.ac.uk
- Roche Lexicon - illustrated navigator, at Elsevier 13048.000-3
- http://isc.temple.edu/neuroanatomy/lab/atlas/papc/
This article incorporates text from a public domain edition of Gray's Anatomy.
Human brain: mesencephalon (midbrain) (TA A14.1.06, GA 9.800)
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Tectum
(Dorsal) |
Surface
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Corpora quadrigemina: Inferior colliculi (Brachium of inferior colliculus), Superior colliculi (Brachium of superior colliculus)
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Grey matter
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White: Sensory/ascending
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Spinotectal tract · Central tegmental tract
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White: Motor/descending
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Peduncle
(Ventral) |
Tegmentum
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White: Sensory/ascending
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lemnisci (Medial, Lateral) · Ascending MLF (Vestibulo-oculomotor fibers) · Spinothalamic tract · Anterior trigeminothalamic tract · Dentatothalamic tract
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White: Motor/descending
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Rubrospinal tract · Rubro-olivary tract · Descending MLF
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Grey: cranial nuclei
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GSA (V: Mesencephalic) - GSE (III: Oculomotor, IV: Trochlear) - GVE (III: Edinger-Westphal)
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Grey: other
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Periaqueductal gray/Raphe nuclei (Dorsal raphe nucleus)
Ventral tegmental area • Pedunculopontine nucleus • Red nucleus
riMLF
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Ventricular system
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Base
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White: Motor/descending
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Cerebral crus: Corticospinal tract · Corticobulbar tract · Corticopontine tract/Frontopontine fibers/Temporopontine fibers
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Grey: Substantia nigra
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Pars compacta · Pars reticulata
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Surface
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Superior cerebellar peduncle (Decussation of superior cerebellar peduncles) · Interpeduncular fossa
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anat (n/s/m/p/4/e/b/d/c/a/f/l/g)/phys/devp
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noco (m/d/e/h/v/s)/cong/tumr, sysi/epon, injr
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proc, drug (N1A/2AB/C/3/4/7A/B/C/D)
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UpToDate Contents
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Related Links
- 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.
Related Pictures
★リンクテーブル★
[★]
- 英
- posterior commissure PC
- ラ
- commissura posterior
- 関
- 前交連
-posterior commissure
[★]
[★]
- 関
- after、afterward、afterwards、backward、behind、following、late、post、posteriorly、subsequent