Notes for myself and anyone else interested: - Sodium/ potassium pumps in the axon actively transfer Na+ out of the cell increasing and K+ into the cell. - K+ ions move out of the axon through K+ channels along the concentration gradient - This results in lesser concentrations of positive ions in the axon, making the inside of the axon more negative than the outside - K+ ions are pulled back into the axon due to the electrochemical gradient - The electrochemical and concentration gradients counteract each other and so there is no net movement of K+ - Potential difference of -70mV is maintained, as the inside of the axon is more negative.
@Diorfitzz
10 ай бұрын
why are you doing this in a youtube comment section 💀
@shazmeertv44
4 ай бұрын
Didnt ask
@kayceelondon
3 жыл бұрын
love this, my teacher just taught us this and your video helped me grasp the concepts of the topic even more!
@MissEstruchBiology
3 жыл бұрын
That's great! Really glad the video has helped you
@lilyfallon4070
3 жыл бұрын
Thank you so much for this clear explanation, was so lost until I found your videos. so glad I have this!!
@MissEstruchBiology
3 жыл бұрын
Hi Lily, So pleased it's helped clarify this topic for you 😀
@Charlotte-pd2wl
Жыл бұрын
Fantastic video, I missed the lesson on this at school. So this was amazing and explained it fabulously
@MissEstruchBiology
Жыл бұрын
ah amazing ! So pleased it helped you to catch up 😀
@queenm.a707
2 жыл бұрын
THANK YOU, God bless you. very useful and helpful. didn't really understand it when my teacher taught it
@MissEstruchBiology
2 жыл бұрын
You're so welcome! So pleased it helped you to understand 😀
@ria.popatkar
3 жыл бұрын
oh my god, thank you so much for this!! I learnt this on wednesday but it went over my head. after watching this video, i understand it now thank you so much miss estruch!
@MissEstruchBiology
3 жыл бұрын
Great that you put in the effort to research the concept after the lesson to make sure you would understand! Really pleased that it helped 😀
@ok-hd4ir
Жыл бұрын
2:14 slight mistake The membrane has a potential difference not the entire neurone and the difference in charge is between the inside and outside of the Axon not the entire neurone.
@jozimaps9420
10 ай бұрын
We love you Miss Estruch❤❤❤😮
@MissEstruchBiology
10 ай бұрын
ahh thank you
@ell6311
2 жыл бұрын
What’s the difference between a generator potential and an action potential? Also does a generator potential lead to an action potential?
@shazmeertv44
4 ай бұрын
Damn , got aired for 2 years
@MrMidoo2010
4 жыл бұрын
Well done!👍
@MissEstruchBiology
4 жыл бұрын
Thanks!
@richm3972
Ай бұрын
I'm confused! If you continually have more potassium Ions leaving the axon through the channel than you have Potassium ions entering via the pump you would eventually run out of potassium ions inside the axon. The reverse would be true of the sodium ions, you would run out of sodium ions outside the axon. I'm assuming there must be a point when the 2 ions reset themselves. Please explain what I am missing. Thanks!
@MissEstruchBiology
Ай бұрын
hey, yes, there is a Na+/K+ pump that restores it(also restores resting potential)
@sabavalizadeh2077
2 жыл бұрын
It was amazing, thank you
@MissEstruchBiology
2 жыл бұрын
You're so welcome
@MatT-vf7qo
4 жыл бұрын
do na+ channels close to maintain resting membrane potential
@MissEstruchBiology
4 жыл бұрын
The Na+ ion channels are voltage-gated, meaning they will open and close when a particular voltage is reached, whereas some of the K+ channels are permanently open. The advantage of this is that it maintains the resting potential.
@lolaxmed9046
4 жыл бұрын
can you please upload the powerpoints on your website
@MissEstruchBiology
4 жыл бұрын
Hi, Thanks for this question. I am aiming to upload the PowerPoints and notes to the sites over the summer
@mariambenafia8839
3 жыл бұрын
Hi I was taught that there is a potassium leakage in the membrane that's why more k leaves the cell?. I might just be confused pls clarify
@MissEstruchBiology
2 жыл бұрын
This would be the same concept. Because there are more potassium ion channels present that remain open potassium ions can diffuse across.. or leak, but the explanation in this video is just a more detailed explanation. Hope that helps
@robbyn-nicolelivingston2209
3 жыл бұрын
I'm so confused! Please help me understand how the distribution of ions create the resting potential of a neuron? How can I apply this to a real world example? Maybe teen brain science?
@marco3391
Жыл бұрын
More positively charged ions move out of the axon than into it, therefore creating a negatively charged resting potential (-70mV)
@Caller8194
2 жыл бұрын
hello euan banks
@amirbatayi3750
2 жыл бұрын
Miss Estruch you’re a life saver thank you so much for taking your time and making these videos as they help alot especially to us A2 students.🫀
@MissEstruchBiology
2 жыл бұрын
Thank you!!! I'm so pleased you are finding my videos helpful 🙂
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