Subcommissural organ

Brain: Subcommissural organ
Mesal aspect of a brain sectioned in the median sagittal plane. (Subcommissural organ not labeled, but region is visible, near the pineal .)
Latin	organum subcommissurale
NeuroNames	hier-474
MeSH	Subcommissural+organ
NeuroLex ID	birnlex_1038

The subcommissural organ is a circumventricular organ consisting of ependymal cells which secrete somatostatin.

It is named for its location relative to the posterior commissure.

External links

• http://www.bu.edu/dbin/anatneuro/research/sleep_and_circadium/overview.php

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v • d • e Brain: mesencephalon (midbrain) Tectum (Dorsal) Corpora quadrigemina: Inferior colliculi (Brachium of inferior colliculus), Superior colliculi (Brachium of superior colliculus) Subcommissural organ • Pretectum Peduncle (Ventral) Peduncle tegmentum Periaqueductal gray (Cerebral aqueduct, Dorsal raphe nucleus) Ventral tegmentum • Pedunculopontine nucleus • Red nucleus (Rubrospinal tract, Rubro-olivary tract)  • MLF (riMLF)  • lemnisci (Medial, Lateral) cranial nuclei: GSA (V: Mesencephalic) - GSE (III: Oculomotor, IV: Trochlear) - GVE (III: Edinger-Westphal) Interstitial cell of Cajal Superior cerebellar peduncles (Decussation of superior cerebellar peduncle) Peduncle base Substantia nigra (Pars compacta, Pars reticulata) Cerebral crus: Corticospinal tract - Corticobulbar tract - Corticopontine tract/Frontopontine fibers/Temporopontine fibers Interpeduncular fossa

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