Question

immediately after an action potential
propagated, which one of the
following ions rapidly diffuse out of
the cell into the tissue fluid.
potassium
sodium
calcium
chlorine​

Answer 1

Answer:

calcium ions

Explanation:

moves from cells into outer spaces called synaptic cleft

Answer 2

After an action potential potassium ions rapidly diffuse out of the cell into the tissue fluid.

• An action potential occurs when a nerve impulse is sent from a cell body where the sodium channel in the cell membrane opens and the positive sodium ions surge into the cell.
• The sodium channels play an important role in generating the action potential to excite the cells and activate a transmission along the axon.
• After the action potential as the neurons have fired, there comes a refractory period in which the appearance of another action potential is not possible.
• The post-action potential period lasts one millisecond.
• During this refractory period, the potassium channels reopen whereas the sodium channels close.
• This process recharges the neurons, therefore, it is possible for another action potential to occur and transmit the signal down the length of the axon.

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