Question

Which channel is open before the rising phase of axon potential?

a) Sodium channel
b) Potassium channel
c) Calcium channel
d) Chloride channel

Answer 1

The channel that is open before the rising phase of axon potential is the Sodium channel. Sodium ion channels allow sodium ions to enter the cell, leading to the depolarization of the membrane.

Step-by-step explanation:

The channel that is open before the rising phase of axon potential is the Sodium channel. The channel that is open before the rising phase of axon potential is the Sodium channel. Sodium ion channels allow sodium ions to enter the cell, leading to the depolarization of the membrane.

Sodium ion channels allow sodium ions to enter the cell, leading to the depolarization of the membrane. This depolarization starts the action potential. The potassium channels open after the sodium channels, allowing potassium ions to flow out of the cell and ending the action potential.