The back-and-forth began Friday when, in a fund-raising email to supporters, Obama campaign manager Jim Messina accused the billionaire brothers of jacking up prices at the pump and bankrolling Tea Party extremism..
Major difference is this. 1  Norepinephrine acts on alpha-1, alpha-2, and beta-1 recpetors...works to raise the heart rate and modulate blood pressure. 2  Epinephrine acts on alpha-1, alpha-2, beta-1, AND beta-2..effective anti-histamine and treatment for shock.
Epinephrine. Epinephrine, also known as adrenaline, is an excitatory neurotransmitter. It is derived from norepinephrine and is secreted along with norepinephrine in response to fear or anger. This reaction, referred to as the âfight or flightâ response, prepares the body for strenuous activity.