Q120 / 160 · JIPMER 2004 · Zoology

ADH controls water permeability of

  • A
    collecting tube
  • B
    proximal convoluted tubules
  • Correct answer
    C
    distal convoluted tubules
  • D
    all of the above

Solution

The vasopressin hormone, secreted by neurohypophysis of pituitary gland promotes the reabsorption of water from the distal convoluted tubules of nephrons, reducing excretion of water in urine (= diuresis). Hence, it is called antidiuretic Hormone (ADH). Its release in blood is controlled by an 'osmoregulatory centre" located in hypothalamus. Hyposecretion of ADH causes diabetes incipidus.

Hence, the correct answer is option: 'C'.

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