The heart beat increases at the time of interview due to

$A$ : Our body secretes adrenaline in intense cold.
$R$ : Adrenaline raises metabolic rate.

Secretion of aldosterone in birds,man and other mammals is stimulated by

$A$ person entering an empty room suddenly finds a snake right in front on the right side. Which one of the following is likely to happen in his neuroendocrine system?

The maintenance of sodium levels in the body depends on the hormones secreted by which gland?

Addison's disease is caused by the deficiency of hormones secreted by the: