red arrow is pointing to:
A. threshold
B. resting membrane potential
C. +30 mv
D. -55 mv
which is roughly:
A. -70
B. -55
C. +30
D. -80
True/false: During phase 2 of the action potential, sodium is diffusing out of the cell through chemical gated ion channels.
False: During phase 2 of the action potential, sodium ions are actually diffusing into the cell through voltage-gated ion channels.
The red arrow is pointing to:
A. threshold
Which is roughly:
D. -55 mV
True/false: During phase 2 of the action potential, sodium is diffusing out of the cell through chemical gated ion channels.
False. During phase 2 of the action potential, sodium influx through voltage-gated ion channels is responsible for depolarization.
To determine the answer to the first question, you need to understand the concept of a resting membrane potential. The resting membrane potential is the electrical potential difference across the cell membrane of a neuron when it is not transmitting signals. Typically, the resting membrane potential is around -70 mV.
To find the answer to the first question, you need to match the red arrow's location with the given options. Based on the options provided, it seems that the red arrow is pointing to option D, which is -55 mV.
Regarding the second question, during phase 2 of the action potential, sodium ions are not diffusing out of the cell. The correct statement would be false. Instead, during this phase, the cell's membrane becomes permeable to potassium ions, resulting in the efflux of potassium ions from the cell, which contributes to the repolarization of the cell membrane.