Thyrotropin-Releasing Factor $(TRF)$ is produced by

Select the correct option on the basis of the following sentences:
$(I)$ Hypothalamus is the basal part of the diencephalon.
$(II)$ It regulates a wide spectrum of body functions.
$(III)$ Two types of hormones are produced by the hypothalamus.
$(IV)$ Oxytocin is a hypothalamic hormone.

$A$ man is admitted to a hospital. He is suffering from an abnormally low body temperature,loss of appetite,and extreme thirst. His brain scan would probably show a tumor in

Select the correct option on the basis of the following sentences:
$(I)$ Hypothalamus is the basal part of diencephalon.
$(II)$ It regulates a wide spectrum of body functions.
$(III)$ Two types of hormones are produced by the hypothalamus.
$(IV)$ Gonadotropins are hypothalamic hormones.

The pituitary gland is under the control of ........

Somatostatin is secreted by