Donnan Equilibrium? Driving Force? What in the world do those things mean? Well, you’re about to find out. In this video I explain the concept of Donnan equilibrium and show how that leads to the Driving Force that’s responsible for generating an Action Potential, otherwise known as the Nerve Impulse. If you want to know even more details about Donnan Equilibrium, check out my Notes on the Nervous System.
Click Here to Download This Video
Watch Donnan Equilibrium and Driving Force on Youtube
Get FREE instant Access to ALL my Downloads
Subscribe to my Newsletter and Download EVERY Resource (Videos, MP3s, Powerpoints) I have at My Disposal, Absolutely Free Of Charge!
nice work man.well done.it was well-organized.where can i fing the other episodes?
And i was wondering.i am confused on smthing.What is the exact difference between Nerst equation Goldmans equation and Donnan equilibrium?because i dont understand clearly what each one talks about.thanx in advance.
@mazas1991
I will be working on more episodes pretty soon, but will be stepping back and starting with basic stuff.
To answer your question, the Nernst equation is the formula used to calculate the Equilibrium potential for an individual ion (e.g. sodium).
Donnan Equilibrium is similar to the Equilibrium potential.
Goldman’s equation takes all of the ions into consideration and allows you to calculate the membrane potential of the neuron.
Hope that helps!
Leslie
@InteractiveBiology thanx very much…yeap it did but i read so many stuff about it that i got confused a bit..if u can, leave an msn or fb or something so i can ask u online some questions that still confuse me..because i have an exam in 1 week so i would appreciate sooooooo much…so if u have time and will hit me up with a message or answer to this comment.thank you very very much in advance.
@mazas1991 The best way to contact me is to use the link in the description of the video. It goes to my Interactive Biology website. There’s also a link to my facebook page on that site.
All the best!
@InteractiveBiology i did it.is there anyway to talk via chat ? thanks
@mazas1991 Yeah, depending on my time availability. Send me a message and we can go from there. I don’t post that info publicly on youtube for the fear of spam
@InteractiveBiology yeah its better this way.could you send me a message so i can reply because i dont know how to do it plz :S
@mazas1991 Like I said, send me a message from my website. Go to the site and click on the contact link. You can send any message from there
@InteractiveBiology i posted in ur page on facebook.this is me.
Its a lovely video with real life example given. Thumbs Up.
@rohanaurora Thanks a bunch. Glad you are enjoying the videos. Stay subscribed for more
Correct me if I’m wrong but should Donnan equilibrium require at least two permeable ions and one non-permeable anion on either side?
Correct me if I’m wrong but shouldn’t Donnan equilibrium require at least two permeable ions and one non-permeable anion on either side?
@Tapahtumahorisontti Not sure about that one.
isnt sodium moving into the cell because of concentration gradient? and its being stopped by its charge potential?
@ediniz101 Yes, that can happen depending on the conditions.
Can someone explain me why we say that sodium is at is own equilibrium’??
when we consider only K+ and Na+ we say that there s no equilibrium , coz we say that membrane potentiale isnt an equilibrium potential ..am i wrong??in fact in the membrane state of rest there s flow of Na+ trhought the membrane to the inner surface of the membrane..
@selenaddict The statement I think I made was that the Membrane potential is at the Equilibrium potential for Sodium. Not 100% sure what you are asking though.
very useful video…thanks
@aboylikeyou88 You are very much welcome!
TERRIBLE puns XD but a really helpful video. Thank you
@Praw48 LOL, terrible puns are the best puns
love the style of your vids