Action Potential of Cardiac Muscle

[@fedonable]

Well, i have been watching you 4 years now in my medical school ( for various subjects ) and i think i finally understood what makes you a great lecturer. Its not only about the information which is clear and usually never arises some question or dilemma, it is about the way you speak. It is rhythmic, every word is clear and the breaths are rhytmic and gives you the sense of a rhytmh and harmony in your speech. Not too fast, not too slow, not fast AND slow in different times. It is steady and vivid. Thank you! You have really helped me in my exams in medical school, especially when i am doing a revising and your lectures sum up perfectly everything in only 10-20 minutes!

[@فاطمةقاسمعبدالباري]

Very true !!

[@rickcrittenden9948]

@@فاطمةقاسمعبدالباري syntax

[@syedtauha4001]

Another thing I wanna add is the appropriate stress on each word Dr Prof Andrey k puts! He's really an awesome expainer!

[@NicaNashaeTV]

PHENOMENALLLLLLLLLLLL!!!!!!!!!!!! I HAVE LOOKED EVERYWHERE FOR A CLEAR EXPLANATION OF CARDIAC ACTION POTENTIAL AND BY FAR YOU WERE THE ABSOLUTE BEST!!!! THANK YOU, THANK YOU, THANK YOU SOOOOOO MUCH!

[@AKLECTURES]

Nica Nashae Thanks! Happy to hear that :-)

[@hmusicfranczak]

This has got to be some of the best content on youtube, I want to thank you for the effort you put into all of your videos :)

[@AKLECTURES]

thanks Heather!

[@kittenluv17]

thank you again, 2 years later still revisiting your absolutely amazing explanations. i will remember you when i finish my journey and pay you back for all your help. wouldn't have made it in college or med school with you andrey, God bless!

[@veerpalgill1365]

the best lecturer in the world..thanks sir

[@Blondeblondie1]

This video is absolutely amazing! Such clear descriptions, not too fast... simply perfect! Thank you so so much for making this :) You are a life saver

[@AKLECTURES]

Antonia Currie Thanks for the positive comment Antonia! awesome to hear that :)

[@lukasx543]

haha u just say thank u to the girls

[@92gulbadshah97]

Love you

[@yoyonfire]

WOW! Rarely have i seen someone explain so clearly, so cleanly and in one go! You must have needed a big glass of water after that! Thankyou for this quick review regarding cardiac action potential. I am totally subscribing to your channel!

[@rmj_1]

I missed my university lecture and to learn this I decieded to watched his video. I only had to watch it ONCE it was super clear!!!!! Thank you.

[@castrotwum2830]

Genius lecturer. Words are not enough to express gratitude, everything is on point. My favorite of all time, no doubt.

[@amered617]

Hhhhhhh my doctor tried to explain that to us in 1 h 😂 and you did it just in 15 min's. Thank you ☺️

[@kapisijames5138]

I have struggled over the years to understand this thing. This is the very first time I have understood it. I can't thank you enough

[@tanimaferdous50]

thanks a llllottt. I have struggled for so many days about this. but this lecture is sooo good. this lecture makes me feel action potential in cardiac myocyte is like a piece of cake.

[@Priyanka95911]

Today while searching round this topic, I saw lot a many more videos here, but after listening u, I was provoked to hear and follow u only, I thought this was the most fruitful and informative for me, as a medical student.

[@dianakrastewa5457]

You're absolutely the best! I took my exams thanks to you! I like that you're making videos about everything and help us understand it so easy. You are the best teacher

[@superboy4yah88]

First off I love your lectures! Also, it says on the bottom of the board that K+ has a higher outside concentration than on the inside, but you said K+ has a LOWER outside concentration compared to the inside. The ion comparison chart is a great visual to allude to for study! Keep up the great work :)

[@kittenluv17]

u are amazing thank you i didn't think u would have a video on this, but here we are ! after hours of wasting my time on other vids i found urs. thank you a millioooon

[@21simplelove]

i am taking anatomy and physiology 1 right now and i am struggling because the instructor i have doesn't explain every topic in this course very well :-( ...you do better than she does. you explain it very well

[@AKLECTURES]

21simplelove thank you! happy to hear that :)

[@jumanh745]

I’m a pharmacy student and I was struggling with this part , you dont know what you did THANK YOU !!

[@asifa.chowdhury3458]

In a word... "Outstanding." Totally get rid from fear about cardiac action potential.. So confused initially about Plateau phase but now I have known that very well.. Thank you :)

[@mohammadayoub3711]

I really love your pronounciation, body language and explanation. Attractive.

[@pratyusha4779]

you are the reason I fell in love with biology! thank you

[@luismanuelguterres4114]

You have a really great ability in pedagogical science. Congratulations!!!

[@joycelyatitima6830]

Am writing exams on Monday and this video has helped me so much Keep it up100%

[@dipakkumarnath1683]

the best class ever i have. it clears lots of my chilly doubts. thank u sir

[@sabrinakrisb4672]

You are by far a better at lecturing and explaining this than my professor I'm amazed.

[@drIren]

Thanks very much great job with nice pronouncation,that every foreign doctors can understand you!! Really very nice👍👍👍

[@KhushiKhan-ep1dw]

Best ever video about cardiac action potential 💖

[@babsaduragbemi5299]

My favorite KZbin teacher!!!!!🙌

[@imanjabar2731]

Best action potential explanation ever !!amazing !!!thank you so so much for making this vedio ,the entire of your vedios are really useful , they contain every infortmation we need to know ,thank you so much a gain and God bless you ......

[@zubaidaali8213]

this video is one of my best thank u so much u have saved my life

[@jayemm8781]

Wish I had stumbled upon this video long ago! Super helpful and easy to follow. Thank you!!

[@dondiakow6364]

Well done! Very clear explanation for all five phases. Thanks.

[@nooralhuda_md7793]

I'm watching this in 2020...thank you so much for this perfect explanation🖤🧡you help me a lot

[@aurangzebkhan9497]

One word awesomeee bravo fantastic oh sorry one word cannot explain ur beautiful teaching style thanks alot

[@winwin-cd1bx]

thank you! when i read my textbook, i cant fully understand about this topic, i wonder why all textbooks cant explain as simple as yours, i really appreciate ur lecture, big big thanks!

[@littleindian99]

Thanks for the video. One correction: you wrote "higher potassium on the outside than on the inside" on the bottom left section of the board. Just wanted to clarify that should be switched.

[@carleygarantziotis9287]

Unbelievable video- best explanation I've ever watched!

[@AKLECTURES]

+Carley Garantziotis thanks!

[@lifeline5864]

I love you man you're always so clear and on point.

[@sasaelsayed9717]

very helpful... thank you for your time Allah's blessings be upon you

[@john.the.beloved]

Brazillian youths would say, "When I grow up, I want to be like you" thanks a lot.

[@konstantinakoutsardaki136]

The greatest lecturer.

[@damonwayne7760]

thank you so much for this great lecture and explanation

[@passionareeramshaikh9396]

Sir you are amazing Every thing is understood Mind blowing God bless you

[@drsheresebrigham2409]

THANKS TO YOU - I WILL GET AN A ON MY EKG EXAM!!

[@doni_sinha]

Thanks a lot for such a clear explanation

[@sara_yehet1580]

Seriously some hero just have KZbin channel 💕💕💕🙆🙆

[@marou5238]

best teacher in the world thinx very much

[@danazamer5280]

Thank you so much this explanation is just perfect🤍🤍

[@2010chibu]

Crystal clear. Thank you. You are the best.

[@howdyneighbour8691]

Thank you so much sir U really made it crystal clear U r awesome😃👍

[@CarolinesUniverse]

This was amazing, thank you so much. As a visual learner, I benefited a lot.

[@crk5657]

Thank you so much for such crystal clear explanation!!

[@zainababdulkareem7746]

I understand things only with your explanation .. thank you soooo much ♥♥

[@AKLECTURES]

زينب عبد الكريم You're very welcome! :-)

[@pratibhagupta8816]

As always , perfect time utilization 😊😊

[@aarushisamal9409]

Thanks a lot , this lecture was really helpful

[@alibab3901]

finally i did understand how this action potential works, Thanks, but what about T-type calcium channel?

[@sonamsherpa611]

best video on cardiac action potential thank u sir

[@abdondiga8827]

Thank you very much Sir you are such the best lecturer ever..

[@ebrahimrawoot8459]

I wish you were my teacher! Great Stuff

[@hanadyhanadosha4890]

Thank you very much for your useful videos ..you have helped me a lot

[@OmarAli-py3pq]

Ak Lecture thanks for your help 💓🌸

[@Dr.NisreenAlDibry]

OMG thank u so much go head ur amazing I could understand u clearly in all ur videos cuz I'm Arabic and all the time I need to choose videos with clear English that i could understand >>>I wish for the god the rise ur Knowlege

[@omarwaziri6801]

I paused the video to give this man a break.

[@hopefulmedstudent4789]

Awesome stuff. Thank you so much for making this video and so many other great ones!

[@meister4ever1]

You are amazing, simple as that.

[@medfreak]

U r an amazing teacher, thank u so much, love from pakistan ❤️

[@celebrityhairextensions4ue906]

Excellent 😊 Thank you kindly.

[@katrinsinyagina3384]

the best video I ever seen

[@DuckDuckGo512]

yep I'd agree with Nica Nashae. Best I have found

[@rutvikvyas779]

awesome video sir.... thank you for clearing my doubts!!!!

[@fatimanothing7647]

Wonderful explanation, thank you I have question after this action potential the normal concentration of ions chnage so how return to normal.(the k more inside and the Na more outside)

[@nis6064]

Thanks a lot sir . clear cut explanation

[@AbujanDisco]

great video great explanation.....Thank you

[@younottube9802]

Thank you Sir ! very Helpful , ... keep doing the good job !

[@AhmedGamalMedicine_gets_easy]

This is just really really amazing :) Thanks for that :)

[@schowdhury8243]

You saved me!!! Thank you so much.

[@dr.ayousuf6465]

this is the BESTvideo.bless you!

[@Dra.karlavea]

thank you, keep up with the great job. I ALWAYS KNOW that I will find the info that I need in your videos .:)

[@islamsokar7794]

Great explanation >> Keep it up :) thank you very much for making sceince easier.

[@Marahxtb]

love your videos! they help a lot thanks

[@Prez2013]

Thank you. Very helpful

[@moeinhoseini8802]

Very nice!🙂 Thank you ❤️👏

[@marinadubini8288]

you are just fantastic. Thank you!

[@marebearzzz027]

this is amazing amazing amazing amazing! Thank you so much

[@uythfgdj9319]

Very helpful continues doing more video ❤️

[@hassinayazid6812]

amazing explanation . thank you

[@faraimumanyi9945]

best lectures ever

[@vbcuntouchables1599]

Excellent!

[@tahajudwaleed2597]

You are a life saver😃😃😃,,thank you very much,, What is absolute refractory period??

[@jovanamihajlovic6848]

Thank you!!! You are amazing!! 😲🤓

[@angielagos5602]

Awesome job! thank you for the lecture :)

[@ranimnaoum5952]

Awesome lecture sir! But I think there is a little mistake: A cardiomyocyte actually can be stimulated either by a close cardiomyocyte or by the electrical conduction system of the heart. The nervous system (sympathetic and parasympathetic systems) cannot directly stimulate a cardiac muscle cell, they tell the SA node to slow down or speed up the pace. So, the SA node is always the pace maker. What changes the pace is the action of the autonomous nervous system on the SA node.

[@ahmedalsayed7369]

very good thanks alot but is ther an explanation for pace marker action potential in the cardiac muscle

[@sandraisabel4152]

best explanation

[@withapulse]

Hi, great video ...but I'm a little confused. At 9.36 you say that the sodium channels are 'time dependent" , but you then immediately go on to say that they snap shut when the voltage reaches positive 30 milivolts. So is it 'time' or the voltage difference that is the determining factor as to when they snap shut? thanks

[@ibrahims.8074]

really!?that's it! , i really regret it that i didnt watch this video before, thank you

[@jamesdahmer5027]

initially I was wondering why this graph highly resembled an ST elevated segment of an ECG, but then came to the conclusion that it's not really related to an ECG at all, only the conductivity of cells as they depolarize through the whole muscle, THUS making the ECG readout as a PQRST - however, I can't figure out why myocytes depolarize up to 120mV, whereas ECG readouts only perceive in the 1mV range. Can someone help explain this?

[@ahmadbader2505]

At this rate all k+ will be out side of cell and the ca and na will be inside. My quastion is where is the point when the k+ that efflux become influx and the Same for Na+and Ca+?

[@nikkivanzelst2505]

Thanks for the video! I just have one question: Why is the membrane potential -90mV, when there are more positive charged ions intracellular than extracellular?

[@nadyaalmasri6079]

Because potassium leaks out from ICF to ECF

[@nohahossamjasmin]

great video, thank you.