Diseases of the Endocrine Glands - Posterior pituitary gland

The posterior lobe of the pituitary gland, the parathyroid glands, and the adrenal medulla are not governed by the anterior pituitary gland. The posterior pituitary produces a secretion called antidiuretic hormone which acts on the kidneys to control the amount of urine produced. A deficiency of this hormone causes diabetes insipidus , which results in the production of an excessive amount of urine, sometimes as much as 25 quarts a day. (A normal amount is about one quart.) The natural consequence of this disorder is an unquenchable thirst. It is an extremely rare disease, the cause of which is often unknown, although it may result from a brain injury or tumor. Treatment involves curing the cause if it is known. If not, the patient is given an antidiuretic hormone.

The Pancreas and the Islets of Langerhans

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