In the heart, action potential is moving from one heartmuscle cell to another over the surface of the heart.
在心脏中，动作电位是在心脏表面从一个心肌细胞向另一个心肌细胞传递。
2
For example, the lungs and the heartmuscle expand less successfully, the blood vessels become increasingly rigid, and the ligaments and tendons tighten.