25 junio 2015
In a life-threatening situation, the heart beats faster and harder, invigorated by the fight-or-flight response, which instantaneously prepares a person to react or run. Now, a new study shows that the uptick in heart muscle contractility that occurs under acute stress is driven by a flood of calcium into mitochondria — the cells’ energy-producing powerhouses.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/JGAFOvtD_L4/150625130903.htm
