MUSCLE
SKELETAL MUSCLE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
When all of the sodium channels open in the muscle cell, a ____ is created.
|
|
Negative Charge
|
|
|
Resting potential
|
|
|
Muscle relaxtion
|
|
|
Action Potential
|
Explanation:
Detailed explanation-1: -At the beginning of an action potential, voltage-gated sodium channels open, allowing sodium ions to enter the cell. This causes the cell to become positively charged compared to the outside of the cell. This process is called depolarization.
Detailed explanation-2: -At the onset of the action potential, Na+ sodium channels open and allow up to a 5000-fold increase in Na+ conductance. The inactivation process then closes the Na+ channels. The onset of the action potential also triggers voltage gating of the K+ channels, causing them to open at the time the Na+ channels close.
There is 1 question to complete.