024 @Nicodube23 How Myelin Sheaths speed up the Action Potential

http://www.interactive-biology.com - In episode 24, I respond to Nicodube23's question on How the Myelin Sheaths speed up the Action Potential through the process of Saltatory Conduction. Watch, learn and Enjoy!

Category:

Education

Tags:

• Saltatory conduction
• action potential
• myelin sheaths
• schwann cells
• interactive biology

[airfergz18]

hey, I really appreciate this! it helped me out a lot and I had the same type of question. I will watch episode 3 now. Do you also get into the CNS and PNS?

[InteractiveBiology]

@airfergz18 Glad to know that it helped :) Yes, there are more videos in the website at the Interactive Biology site. And, there are those focused on the nervous system touching on topics about the CNS and PNS... We hope you'll find what you need :) And, stay tuned because we have more coming soon!

[zackboomer]

@InteractiveBiology hey, just something about terminology - in class our prof stressed that the sodium ions were not literally "jumping" from node to node, rather just moving very quickly. is this correct?

[InteractiveBiology]

@zackboomer Semantics my friend. He says moving quickly, I say jumping. We both mean the same thing!

[bohdanmaks]

@2ManuBoy2

No, see, Na+ wouldn't 'need' to wait around to depolarise every Voltage Gated Sodium Channels in order, but would travel down the axon triggering all of VGSC's as the ions diffused along. What slows it down is that Na+ actually leaks back out in uninsulated areas, shortening the effectiveness of each action potential event, slowing down transmission despite the fact that more VGSC's are available to provide a Na+ infusion.

[2ManuBoy2]

Hi good video. i have a different way of thinking about why it speeds up conduction. basically in myelinated neurones the actional potentials only has to depolarise the nodes of ranvier and not the mylein sheath since the mylein sheath is impermeable to Na+ ions and node of ranvier are premeable. Therefore allows for saltatory conduction. However in unmyleinated neurons the action potential must depolarises the entire area of the axon. therfore resulting in slower conduction. is this right?

[yattrich49w]

Peculiar responses for this video once again.

[SpiralsHappen]

Consider the assault to our myelin sheaths by the globalist bankster and corporate controlled and corrupted criminal US political elite onto the American people today. In the form of Chemtrails that contain aluminum oxide and barium oxide. Fluoridated water and vaccines that contain mercury. GMO foods etc. The list of assaulting substances goes on and on. To dumb us down while they conspire to cull us all to a manageable number. 

[dadalacks]

So, is it that the Na + moves down the axon following the negative charges distributed along the length of the axon?

[shuffle224]

Great video, that makes a lot of sense. Thanks for explaining it so well!