Briefly describe the roles of ion channels in generating an action potential in healthy individuals. You...
Briefly describe the roles of ion channels in generating an action potential in healthy individuals. You may use a diagram to answer the question if you wish.
Please make this detailed
Homework Answers
- Ions channels are protein molecules which are found in the cell membrane
- It allows the passage of ions from in and out of the cell
- They are selective in Nature which means that they allow only certain ions to pass through them
- Action potential is generated by a type of ion channel called voltage gated ion channel
It is explained in detail with the help of a diagram:-
- When the membrane potential is at resting stage,ion channels are shut
- When the membrane potential increases to threshold voltage,ion channels open
- Depolarization of transmembrane potential
- Inward flow of sodium ions
- Change in electrochemical gradient
- Further increase in membrane potential
- More sodium channels gets opened
- Generation if -greater electric current across the membrane
- When all the sodium ion channels gets opened, potassium channels gets opened and sodium channels gets closed
- Thus results in repolarization
- Potassium ions moves out of the axon
- Change in polarity created between outside and Inside of the cell
- This results in generation of action potential
Diagram is explained below:-
Add Answer to:
Briefly describe the roles of ion channels in generating an
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