retrochiasmatic part of the supraoptic nucleus
The term retrochiasmatic part of the supraoptic nucleus refers to one of two parts of the supraoptic nucleus as demonstrated by Nissl stain in the hypothalamus of the human, macaque, rat and mouse. It is the more ventromedial part. In the human ( Mai-1997 ) and the macaque ( Paxinos-2009a ) it is bounded laterally by the optic tract. In the rat ( Swanson-2004 ) and the mouse ( Paxinos-2001 ) it is relatively smaller and thinner and is bounded laterally by the supraoptic decussations, which lie atop the optic tract. In all four species it is partially bounded medially by the larger retrochiasmatic area. It does not appear in the mouse brain atlases of Hof-2000 and Dong-2004.
     The other part is the dorsolateral part of the supraoptic nucleus, which is also known as the 'supraoptic nucleus proper'. The retrochiasmatic part is located more rostrally, in the anterior hypothalamic region. The dorsolateral part is more posterior in the intermediate hypothalamic region.
     Functionally the supraoptic nucleus belongs to the subcortical motor system ( Swanson-2004 ).

Also known as: No other name for this structure has appeared in PubMed.NeuroNames ID : 1872

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