Question

fill in the blank question the sarcolemma of the cardiac muscle cells has fast voltage - gated channels that participate in the depolarization of the cell membrane. need help? review these concept resources.

Explanation:

In cardiac muscle cells, fast voltage - gated sodium channels are crucial for the initial rapid depolarization phase of the action potential. They open quickly in response to a change in membrane potential, allowing sodium ions to rush into the cell.

Answer:

sodium