The answer is C, i just did it and got it right so you can trust this answer, i wrote so much because of the 20 character thing
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The rapid depolarization phase of the action potentials of myocardial contractile cells is due to Na⁺ ion.
The depolarization is caused when Na⁺ ions rapidly enters into neuron through open sodium channels. Sodium ions plays important role in various physiological process such as regulating blood volume, ph regulation, maintaining blood pressure, energy metabolism,osmotic equilibrium, excitation-contraction coupling, maintenance of cellular homeostasis, development and growth.
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Answer:
can you take a closer pic?
Explanation:
2- Fault Lines (California is a big clue my homie)