when you are under physical stress, what hormone is released quickly to stimulate an increase in blood glucose concentration?

Epinephrine  
Otherwise called adrenalin or adrenaline, is a hormone, neurotransmitter.Epinephrine is typically delivered by both the adrenal organs and certain neurons. It assumes an essential part in the battle or-flight reaction by expanding blood stream to muscles, yield of the heart, understudy enlargement, and blood sugar.It does this by official to alpha and beta receptors. It is found in numerous creatures on the planet.