Why do neurons have an electric charge? | Nernst Potential | Resting Potential of Neurons

Neurons are biological cells, so why do they have an electric charge? In this video, we introduce the concepts of an electrochemical gradient of ions, the Nernst potential, then connect these concepts with Ohm's Law from electricity and magnetism to explain the electrical potential of a neuron when it is at rest.
Playlist for all videos in series: • Introduction to Neuros...
Professor Bing Wen Brunton
www.bingbrunton.com
@bingbrunton on twitter
%%% CHAPTERS %%%
0:00 A cell divides outside from inside
2:30 The cell's electrical potential
5:51 A balance of electrical and chemical forces
9:25 The Nernst Equation
13:40 The sodium-potassium pump
20:08 The fainting goats
22:20 The Goldman-Hodgkin-Katz Equation
27:35 Ohm's Law and ion flow
40:55 How are ion channels so choosy
45:00 Key concepts summary

[@glemma03]

The subtle recommendation to search for and watch videos of fainting goats, you’re welcome = genius 😂. Amazing content! Thank you so much for making this available!

[@BCarli1395]

I really like the way you view neuroscience from a variety of frames, so to speak, like electrical diagram as well as the usual chemical analogies. I’ve always found those connections lead to broader insights, being able to abstract one level higher, in the way that mathematicians do. Thank you!

[@HarshSingh-yg8fk]

i have learnt a lot from you:) thank you

[@frakean9174]

So far,your lectures are so exquisite like you,i can't thank enough for ur efforts,still felt bad,you deserve a million views

[@BCarli1395]

Also, great graphics!

[@emmanuelmakinde7694]

thanks for your value of making these equations appear intuitive

[@AIsachenka]

Well done, explanations are pretty clear and deep at the same time. Going to watch the whole Course.🤓

[@fatihonay1555]

Thank you for the great content you provided for us! I thought about independency of ion channels and tried to make analogy to the circuit diagram. In the circuit diagram, changing value of voltage source (assume that Ek) will directly affect amount of flowing current at each branch. This independency may only valid under some constraints we need to point out.

[@hanyelbanna3673]

Wonderful explanation 👏
I appreciate your effort
May Allah bless you
Thanks

[@ajit_edu]

Nice, very intuitive lectures. 10:41 when we calculate the outside concentration of K+, what volume in outside region we are looking at ?

[@bingsbrain]

Great question! We are most concerned with the concentration of K+ immediately outside the cell. This concentration can be the same as solution the cell is in, but can also be locally a little different before it equilibrates with the exterior solution.

[@ajit_edu]

Thanks Bing !

[@frakean9174]

So far,your lectures are so exquisite like you,i can't thank enough for ur efforts,still felt bad,you deserve a million views