Other substances that are secreted include drugs like and a nucleic acid metabolism byproduct, .

This secretion is about the tubular fluid for removal from the body. These substances, drugs etc. include in this.

from the original order (top to bottom) the new order will go

1 (founder)

4 (hawk)

2 (mutate)

3 (next generation)

endo:

regulates body hormones, aldosterone, vasopressin

neural:

signal, regulates body using electric signals, reflex

endo has to do with hormones; aldosterone and vasopressin are both hormones. i also had this question and got it right : d