Adrenalin
True.
Yes.
insulin
I ampretty sure you do i am not positive though
Increases the heartbeat, the blood flow and expands the veins to accommodate the flow
It increases
yes because they are tired and exert energy or force..............
nonsense i dint know the answer
Pericarditis
when the level of oxygen increases in the blood , chemical receptors will inhibit the medulla oblongata
due to catalyst
Mass of any chemical, in chemistry, is constant, no matter what you do to it.