Hyposecretion of the adrenal cortex leads to which condition?

Blood pressure is regulated by which of the following glands?

Which of the following hormones regulates the reabsorption of $Na^+$ and the excretion of $K^+$?

$A$ frightened resident living on the seventh floor of a high-rise building quickly runs down the stairs after feeling earthquake tremors. Which hormone is responsible for initiating this action?

In a 'fight or flight' situation,which part produces the hormones?

$A$ 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?