A Little Review of Heart Electrophysiology
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This video tutorial reviews foundational principles of heart electrophysiology:
0:00. Introduction
0:32. A cell is like ... a salty banna
1:26. Ions need an open door to walk through a wall
2:21. Negative Vm indicates the internal membrane surface is negative relative to the outside
3:04. The Vm is established and maintained by K+ ions
6:40. Action potentials are produced by ionic currents flowing through ion channels
8:59. Na-K pump Restores Na/K concentrations inside and outside of membrane
9:35. If you need more help with Resting Membrane Potential and the role that K+ plays click on this link: • Resting membrane potential
9:53. In-a-nutshell
10:00. Acknowledgements