Hypothalamic nucleus mainly involved in the secretion of ADH is:

  # Hypothalamic nucleus mainly involved in the secretion of ADH is:

A. Preoptic

B. Supraoptic

C. Paraventricular

D. Suprachiasmatic

The correct answer is B. Supraoptic.

The human pituitary gland consists essentially of two parts both controlled by the hypothalamus. The glandular part is the adenohypophysis or anterior lobe and the neural part is the neurohypophysis or posterior lobe. Both the supraoptic and paraventricular nuclei exert control over both the hormones ADH and oxytocin. But in specific ADH is secreted mainly by supraoptic nucleus of hypothalamus and oxytocin mainly by paraventricular nucleus. From hypothalamus, these hormones are transported to posterior pituitary through hypothalamic- hypophyseal tract by axonal flow.