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median eminence of hypothalamus
A slightly prominent lower segment of the hypothalamic infundibulum, immediately proximal to the hypophysial stalk.
The region is characterized by capillary tufts of the infundibular arteries with fenestrated endothelium characteristric of circumventricular organs. The hypothalamic-hypophyseal portal system of veins arises from these capillaries.
Related
anterior pituitary (adenohypophysis)
hypothalamic-pituitary-portal circulation
General
circumventricular organ
brain structure
References
- Stedman's Medical Dictionary 27th ed, Williams &
Wilkins, Baltimore, 1999
- Grant's Atlas of Anatomy, 10th edition, AMR Agur & MJ Lee (eds),
Lippincott Williams & Wilkins, Philadelphia, 1999
Component-of
hypothalamus