Medical Definition of Pars tuberalis
1.
The upward extension of the anterior lobe that wraps around the infundibular stalk; its cells, mostly gonadotropic, are arranged in cords and clusters; it is supplied by the superior hypophyseal arteries and contains the first capillary bed and the venules of a portal system that carries neurosecretory factors from the hypothalamus to a second capillary bed in the adenohypophysis where they regulate the release of hormones.
See: hypophysis.
Synonym: infundibular part, pars infundibularis.
(05 Mar 2000)
Lexicographical Neighbors of Pars Tuberalis
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