fig1
From: Energetic metabolism in cardiomyocytes: molecular basis of heart ischemia and arrhythmogenesis
![Energetic metabolism in cardiomyocytes: molecular basis of heart ischemia and arrhythmogenesis](https://image.oaes.cc/427d5a2d-925b-4d26-bd70-07ac80692e37/2339.fig.1.png)
Figure 1. The role of calcium in excitation-contraction coupling. Green arrows: calcium entry; blue arrows: calcium exit; SR: sarcoplasmic reticulum; RyR: ryanodine receptor; NCX: Na+/Ca2+ exchanger