Pituitary Gland and Hypothalamus

  • Ricardo V. Lloyd


The human pituitary gland has two major parts—the adenohypophysis, which comprises the pars dis-talis, pars intermedia, and pars tuberalis, and the neurohypophysis, which includes the posterior lobe, neural stalk, and infundibulum. The adenohypophysis is derived embryologically from the invagination of the stomodeal ectoderm, Rathke’s pouch, which is the roof of the stomodeum or primitive buccal cavity. The neurohypophysis originates in the floor of the diencephalon. It retains a permanent connection with the brain via the infundibular stalk. The pituitary can be recognized macroscopically by 12 weeks of gestation (30).


Growth Hormone Pituitary Adenoma Pituitary Gland Secretory Granule Cell Adenoma 
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Copyright information

© Springer-Verlag New York Inc. 1990

Authors and Affiliations

  • Ricardo V. Lloyd
    • 1
  1. 1.Warthin-Weller Professor of PathologyUniversity of Michigan Medical CenterAnn ArborUSA

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