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  2. Hypophyseal portal system - Wikipedia

    en.wikipedia.org/wiki/Hypophyseal_portal_system

    The hypophyseal portal system is a system of blood vessels in the microcirculation at the base of the brain, connecting the hypothalamus with the anterior pituitary. Its main function is to quickly transport and exchange hormones between the hypothalamus arcuate nucleus and anterior pituitary gland.

  3. Portal venous system - Wikipedia

    en.wikipedia.org/wiki/Portal_venous_system

    Most capillary beds drain into venules and veins which then drain into the heart, not into another capillary bed. There are three portal systems, two venous: the hepatic portal system and the hypophyseal portal system; and one arterial (one capillary system between two arteries): the renal portal system. [1] Unqualified, portal venous system ...

  4. Portal vein - Wikipedia

    en.wikipedia.org/wiki/Portal_vein

    It is a major component of the hepatic portal system, one of three portal venous systems in the human body; the others being the hypophyseal and renal portal systems. The portal vein is usually formed by the confluence of the superior mesenteric, splenic veins, inferior mesenteric, left, right gastric veins and the pancreatic vein.

  5. Paraventricular nucleus of hypothalamus - Wikipedia

    en.wikipedia.org/wiki/Paraventricular_nucleus_of...

    The axons of the parvocellular neurosecretory neurons of the PVN project to the median eminence, a neurohemal organ at the base of the brain, where their neurosecretory nerve terminals release their hormones at the primary capillary plexus of the hypophyseal portal system. The median eminence contains fiber terminals from many hypothalamic ...

  6. Vein - Wikipedia

    en.wikipedia.org/wiki/Vein

    Portal venous systems. A portal venous system is a series of veins or venules that directly connect two capillary beds. The two systems in verebrates are the hepatic portal system, and the hypophyseal portal system. Anastomoses. An anastomosis is a joining of two structures such as blood vessels.

  7. Hepatic portal system - Wikipedia

    en.wikipedia.org/wiki/Hepatic_portal_system

    The other portal venous system in the body is the hypophyseal portal system. [1] Structure ... The hepatic vein subsequently drains into the inferior vena cava.

  8. Pituitary gland - Wikipedia

    en.wikipedia.org/wiki/Pituitary_gland

    This dual-origin structure and function are what make the pituitary gland a unique and critical component of the endocrine system, acting as a bridge between the nervous and endocrine systems. 5. Pituitary stem cells: stem cells are found in the pituitary [ 12 ] [ 13 ] which can differentiate into various types of hormone-producing cells in ...

  9. Neurohormone - Wikipedia

    en.wikipedia.org/wiki/Neurohormone

    Releasing hormones also known as hypophysiotropic or hypothalamic hormones are synthesized by different kinds of specialized neurons in the hypothalamus. They are then transported along neuronal axons to their axon terminals forming the bulk of the median eminence, where they are stored and released into the hypophyseal portal system.