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The human body predominantly expels water through the urinary system. On average, an individual generates around 1.5 liters of urine each day. This amount can fluctuate based on how well a person is hydrated, but a critical minimum quantity of urine must be produced to ensure the body's proper functioning. Daily, the kidneys remove 600 to 1200 milliosmoles of dissolved substances, effectively excreting excess minerals and water-soluble toxins such as creatinine, urea, and uric acid from the...
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Antidiuretic hormone. Normal and disordered function.

G L Robertson1

  • 1Departments of Medicine and Neurology, Northwestern University Medical School, Chicago, Illinois, USA. glr388@northwestern.edu

Endocrinology and Metabolism Clinics of North America
|September 27, 2001
PubMed
Summary
This summary is machine-generated.

Antidiuretic hormone (ADH), also known as arginine vasopressin (AVP), is a nonapeptide produced in the hypothalamus. It travels through the pituitary stalk to the posterior pituitary for release into the bloodstream.

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Area of Science:

  • Neuroendocrinology
  • Physiology

Background:

  • The antidiuretic hormone (ADH), or arginine vasopressin (AVP), is a crucial nonapeptide in mammals.
  • Its production originates in hypothalamic neurons, specifically the supraoptic and paraventricular nuclei.

Purpose of the Study:

  • To describe the origin and pathway of antidiuretic hormone (ADH) production and release in humans and mammals.

Main Methods:

  • The study describes the anatomical origin and projection pathways of neurosecretory cells producing ADH/AVP.
  • It details the transport mechanism via the pituitary stalk to the posterior pituitary.
  • The vascular drainage of the posterior pituitary into the systemic circulation is outlined.

Main Results:

  • ADH/AVP is synthesized by large neurons in the hypothalamus's supraoptic and paraventricular nuclei.
  • These neurons project axons through the pituitary stalk to the posterior pituitary.
  • The hormone is released from capillary plexuses in the posterior pituitary into the systemic circulation.

Conclusions:

  • The hypothalamus-pituitary axis is central to ADH/AVP regulation and release.
  • Understanding this pathway is fundamental to comprehending water balance and cardiovascular homeostasis.