@markensaw The refractory period that the voltage gated ion channels experience (that is, after they let some sodium in, they won't let any more in for a while) make sure that the impulse never goes the "wrong way." If neurons had a relationship status, it would be "it's complicated with."
still dont get why the sodium ions diffusing to adjacent areas dont trigger an action potential in both directions........you see the sodium poring in and going both ways within the axon, yet the next sodium ion channel to be opened is to the right side.....what about the ones to the left? why dont they get activated as well and mess up the direction of the impulse?
@Sn0wFreak I was wondering the same thing! The reason the signal propagates in one direction is because the region that has just undergone repolarization (in the wake of the action potential) is in a relative refractory period and cannot depolarize again unless/until it receives a new impulse. I'd imagine that a malfunctioning neuron that lacked this refractory period (its voltage gates remained active even after the signal passed) would be unable to conduct a signal.
@josenros In fact, this makes me wonder if any neurological diseases are characterized by problems with the voltage gates that shorten or eliminate the refractory period.
@1611malu
nothing will happen since that is referring to the blood stream, not the nerve itself.
kidmirk92 1 month ago
What happens to the process explained when there is a deficiency of Na/K in the blood???
1611MALU 5 months ago
This is a great presentation of action potential. How does the impulse know which way to travel?
markensaw 10 months ago
@markensaw The refractory period that the voltage gated ion channels experience (that is, after they let some sodium in, they won't let any more in for a while) make sure that the impulse never goes the "wrong way." If neurons had a relationship status, it would be "it's complicated with."
aschwa5 10 months ago
wow that was great thank you very much!!!
edaliesmer 11 months ago
Comment removed
hellokittydimaggio 11 months ago
amazing video!!!
thanks a lot
amartynenka 1 year ago
thanks for the video =)
(by the way, I'm a psychology student ;p)
wleey2500 1 year ago
Beautifuly done! Thanks!
iam4u2cl8er 1 year ago
thanks! video animation rally helps
MsMiera91 1 year ago
still dont get why the sodium ions diffusing to adjacent areas dont trigger an action potential in both directions........you see the sodium poring in and going both ways within the axon, yet the next sodium ion channel to be opened is to the right side.....what about the ones to the left? why dont they get activated as well and mess up the direction of the impulse?
Sn0wFreak 1 year ago
@Sn0wFreak I was wondering the same thing! The reason the signal propagates in one direction is because the region that has just undergone repolarization (in the wake of the action potential) is in a relative refractory period and cannot depolarize again unless/until it receives a new impulse. I'd imagine that a malfunctioning neuron that lacked this refractory period (its voltage gates remained active even after the signal passed) would be unable to conduct a signal.
josenros 1 year ago
@josenros In fact, this makes me wonder if any neurological diseases are characterized by problems with the voltage gates that shorten or eliminate the refractory period.
josenros 1 year ago
great video... it helped me alot... =>
25nickelodeon 1 year ago
great video !! very helpful
tatihoro 1 year ago
beautiful, thanks helped alot.............
adeelfromny 2 years ago
Out of all the ones I've watched so far this one is the easist to understand. Thanks
rainyd32 2 years ago
THANKS
cassiechenn 2 years ago
great, thx 4 uploading!
XxPimperxX 2 years ago