hypothalamohypophysial portal system

[hī′pō-thăl′ə-mō-hī′pə-fĭzē-əl, -zē-, -hī-pŏf′ĭ-sēəl]


A system of veins that originate in the hypothalamus and pass through the pituitary gland and into its anterior lobe, where they branch into a capillary bed and convey releasing factors to the anterior lobe.

Nearby words

  1. hypotensive,
  2. hypotensor,
  3. hypotenuse,
  4. hypoth.,
  5. hypothalamic infundibulum,
  6. hypothalamus,
  7. hypothallus,
  8. hypothec,
  9. hypotheca,
  10. hypothecary

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.