Both adrenaline and cortisol are secreted in response to stress. Which of the following statements is true for both of these hormones?

The integrated system of the body is .....

Given below are two statements: one is labelled as Assertion $A$ and the other is labelled as Reason $R$:
Assertion $A$: $FSH$ acts upon ovarian follicles in female and Leydig cells in male.
Reason $R$: Growing ovarian follicles secrete estrogen in female while interstitial cells secrete androgen in male human being.
In the light of the above statements,choose the correct answer from the options given below:

The hypothalamic hormones reach the pituitary gland through$:-$

The nervous system and endocrine glands are

Insulin differs from growth hormone in the context of: