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Supraoptic nucleus
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Supraoptic nucleus : ウィキペディア英語版
Supraoptic nucleus

The supraoptic nucleus (SON) is a nucleus of magnocellular neurosecretory cells in the hypothalamus of the mammalian brain. The nucleus is situated at the base of the brain, adjacent to the optic chiasm. In humans, the SON contains about 3,000 neurons.
==Function==
The cell bodies produce the peptide hormone vasopressin, which is also known as anti-diuretic hormone (ADH). This chemical messenger travels via the bloodstream to its target cells in the papillary ducts in the kidneys, enhancing water reabsorption.
In the cell bodies, the hormones are packaged in large, membrane-bound vesicles that are transported down the axons to the nerve endings. The secretory granules are also stored in packets along the axon called Herring bodies.
Similar magnocellular neurons are also found in the paraventricular nucleus.

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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