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Pituitary stalk

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Brain: Pituitary stalk
Pituitary gland
Pituitary stalk not labeled, but is the vertical blue portion.
Latin infundibulum neurohypophyseos
Gray's subject #189 813
Part of
BrainInfo/UW hier-388
MeSH A06.407.747
Also see infundibulum for other uses of the term.

The pituitary stalk (also known as the infundibular stalk or simply the infundibulum) is the connection between the hypothalamus and the posterior pituitary.

It carries axons from the magnocellular neurosecretory cells of the hypothalamus down to the posterior pituitary where they release their hormones into the blood.

This connection is called the hypothalamic-hypophyseal tract, and is responsible for the release of oxytocin and antidiuretic hormone.

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