What features set early hominins apart from other primates

Bipedalism, tool making and use, and a larger brain were the key differences between early hominids and other primates.

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