The two key cations involved in the action potential of nervous transmissions are?

A. Na+ and Fe2+
B. Mg2+ and K+
C. Na+ and K+
D. Fe2+ and Mg2+

Correct Answer:

Option C = Na⁺ / K⁺ 

Explanation

The Na⁺ / K⁺ helps maintain resting potential, affects transport, and regulates cellular volume.