Epinephrine is.....

Select the correct statement regarding the interaction between the nervous and endocrine systems.

$I.$ Autocrine hormones $II.$ Endocrine hormones $III.$ Paracrine hormones
Among them, which one is/are local regulator(s) and do not travel through the blood?

Each receptor is ...$A$... to one hormone only and hence,receptors are ...$B$... Hormone receptor complex formation leads to certain biochemical changes in the ...$C$.... Choose the option containing correct combination of $A, B$ and $C$.

Which of the following is a "second messenger"?

Which of the following is an example of negative feedback control in humans?