Release of Antidiuretic Hormone from the Neurohypophysis

  • W. J. O’Connor


Fig. 37 represents diagrammatically the items involved in the control by the neurohypophysis of the volume of the urine. Increase in the osmotic pressure of the circulating plasma stimulates “osmoreceptors” in the anterior hypothalamus. Stimulation of the osmoreceptors leads to stimulation of the supraoptico-hypophysial tract, the fibres of which arise from cells in the supraoptic and paraventricular nuclei of the hypothalamus and extend via the pituitary stalk into the neural lobe of the pituitary. Stimulation of this tract causes the release of antidiuretic hormone from its endings; the released hormone enters the blood stream and so reaches and exerts its antidiuretic action on the kidneys. The renal action of the antidiuretic hormone has already been described in the previous chapter; this chapter deals with the neurohypophysis and the factors which determine the release of the hormone.


Antidiuretic Hormone Osmotic Pressure Urine Volume Plasma Osmolality Posterior Lobe 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© W.J. O’Connor 1982

Authors and Affiliations

  • W. J. O’Connor
    • 1
  1. 1.University of LeedsUK

Personalised recommendations