action potential for beginners 

I've literally watched like 7 videos on RU-vid explaining the same exact thing. Yours is the ONLY one that really breaks it down so that even a child can understand. THANK YOU

Gifted, polite, having absolute command, humble and modest teacher. Hats off, the absolute best video.

The ABSOLUTE best video on RU-vid explaining action potential. You are literally the best teacher ever for simplifying an otherwise complicated process. Thank you x a million!

Thank you for such a great video! The Q&A portion at the end is so helpful for both making sure I truly understand it, and for coming back as a review to make sure I STILL understand and know it. Also, thank you for fixing the subtitles, it really helps the hearing impaired and deaf med students in the world! Quiz starts at 16:44

You are helping me so much! I've been feeling so stupid in a class full of smart kids and now I just realize I needed it explained in a clearer way. I wish very Professor spoke in such clear cut terms as you. Thank you and you can tell by the comments you are literally helping people from all around the world. You should get an award. You make the student world a better place.

Honestly the best video I have come across that clearly explains action potential. Thank you sir!

I've been stuck here for years. Thank you Ren for such a clear explanation unlocking action potential.

I am a student at another University. No matter how many lectures I sat through or how many videos my professor posted, I was struggling with this. This video helped me understand it a lot better. Thank you for making this video, I appreciate it. Hopefully now I can pass my exam in 2 days. You have saved me!

I have watched numerous videos and have watched them repeatedly, and still felt like I was banging my head on a wall. I finally understand thank you.

Unbelievable!!!!! You did an awesome job with helping me understand Action Potential. Thank you sooooooo much.

Dr. Hartung. You are the best teacher I have found so far. Your students are blessed to have a teacher like you and thank you for sharing your knowledge with us on RU-vid.

I MUST say I completely agree with the previous comment. Thank you for explaining this so thoroughly and in such a simple manner that even a child can understand it. I have also watched several other u tube videos and they all talk really fast and are so detailed that I get lost in the process. I appreciate you talking slowly so that my brain can grasp and comprehend the process and also for reviewing over the whole process again to instill the process firmly in my mind.

By far the best explanation on action potentials!

THIS IS THE BEST VIDEO U CAN EVER GET IN RU-vid ABOUT ACTIONPOTENTIAL...THANKS A LOT SIRR!!!!!

Wow! Got it now. Thank you for your video you really know how to explain things simply, that can be understood simply!

This is the only RU-vid presentation on action potentials that I actually understood. I'm looking at all your youtube lectures. Thanks for communicating this very difficult step by step. Kudos

Thank you so much. after watching different videos for weeks, this is the first explanation that makes sense. I will watch this over and over till I can explain it myself. Thank you

Thankyou so much Mr Hartung, you are truly amazing and have really helped me out in my preparation for my exam all the way here in Australia! Thankyou so much for all your kind help :)

Loved how you first explained the whole theory and then asked questions regarding it.The fact that i could answer all your questions correctly made me happy .Thankyou so much.

Thank you so much! I am a returning student after 25 plus years and was feeling ready to give up. You have helped me greatly. Thank you from Tennessee

Thank you much. I've been reading this portion of my chapter over and over again and seeing it visually a light bulb went on immediately. Thank you!

Ren, THANK YOU!! You made action potential so easy to understand, even I got it!! You helped a ton please make more videos!

thank you so much. this is so helpful and I love the way you pause to let me think about it and figure things out, you're not rushing and it's just perfect. thank you again!

Thank you so much! I'm so lucky to have found this video. Your explanation was fantastic. I also enjoyed the questioning at the end & reviewing. Explanation was so well done I was able to reproduce the graph & diagram and talk myself through the action potential process. Just have to repeat it a few times to get it into longer term memory! Thanks again!

This video was so great I finally understand

this was the best video so far I have come across which clearly explains what an action potential is! Thankyou sir!

I cannot thank you enough for taking the time to explain this concept. Your pictures and explanations are so helpful. I finally get it!

Thank you for taking the time and effort to explain this material.

I am really learning a lot from your videos prof. Keep up the good work. THANK YOU

I really love this Very clear explaination and testing of understanding at the end of the lecture You're a good teacher 👍

You just lift off my head this confusing topic and make it so sweetly sweet. Thank you sir. Your student from Nigeria.

WOW!!! Thank you for your clear explanation of what an AP is. I'm a visual learner and this makes me feel pretty smart. Thank you.

You said somewhere right before quiz questions "I hope it make sense". Now I can answer.. it is way more make sense for me. thank you.

omg thank God I found you; everything makes so much sense now. thank you so much

This video is super helpful. I love the way in which you explain. I really got it. Thank you!!

Awesome! Thanks for taking simplification to a whole new level.

Thank you so much for this! I took a test and had to explain this and I didn't do too well explaining so I went on here to try and understand it, this was so helpful!

you saved my life... thank you soooo much I wish you are my professor

The best video on the topic!!! I'm so glad I found your videos.

Thanks for a better explanation. Deeply appreciate your work and effort here. More power💪💪💪👍😁

Thank you so much for this video .This makes everyone to understand clearly about this subject. Hats off you sir.

i watched more than 4 videos and i can only understand yours. it is so clear for me cause english is my second language !! you are great and thank you

This is the most helpful and well explained video about action potential for me. Thank you Sir and God bless!

Thank you for this video! I appreciate the end review questions as well. Very helpful.

Thank you Ren, this was such a helpful video to get a clear understanding of action potential.

Thank you so much! your method of teaching works for me and I so appreciate the quiz section. You are amazing!

Great video, it cleared up my knowledge of the process of an action potential.

Professor, I really understand your scope of teaching. I have a test next week I just couldn't get it until I watch your video. thanks so much may God bless you always. I will definitely look at all your videos I am sure I will learn much more by looking at them.

Thank so much for this fine explanation. You really made it much clearer for me.

I watched this video a lot in AP1, now I’m in AP2 and it’s a good refresher

yesssss I was able to answer each and every question, Praise God!!!!!!

Professor thank you soo much , i have taken bio,anatomy , pathophisyology, ,microbiology, molecular cell biology , genetics and durigh all this classes i came across action potentioal and non of my professors explained this topic as you did thank you soo much loved your videos and please if you can upload some videos from biochemistry class i am taking that class niw and there is not so many videos available thank again professor

THANK YOU SO MUCH, so easy to understand, you have a teaching gift seriously!

The Q&A part is so helpful! You're a wonderful professor!

Such a fantastic way of explaining complicated concept’s so simply

This video was very helpful. I finally understand this concept a little better by your presentation and quiz. Thank you!

everybody saying "i bet you had studied so many notebooks like a parrot to get into med school" *me just watching Ren Hartung videos with my manual open and having fun knowing that i have more knowledge than my competitors*

Thank you so much for this video, it has given me a much better understanding of action potentials and a bit more confidence to write my assessment on what an action potential is.

I had an exam today. I did great! Thanks to you. God bless ❤️

this was awesome in showing the basics about action potential. Thanks so much!!!

God bless you. You explained it very well in precise way thanks for your clarification lecture 😮

Thank you so much for this video. I learned so much from you explaining step by step and drawing.

Thanks for subtitles , for people who dont have english in fisrt language helps alot!

Wooow now I understand. My lecturer just talks without making me understand but you are spectacular

OMG! You made clear in 30 minutes what my professor confused me in a two hour lecture!!!! 😥

omg i finally understand, thank you

Amazing explanation ✌️✌️ BIG THANK YOU

Thank you so much, I truly understand each step, and how the gates respond to each step. I wish you were teaching at Antelope Valley College in Lancaster, Ca👍🏽👏😃

thank you so much Dr. Ren...YOU just save my life

Lol thank you very much! :( I'm very troubled in understanding electrophysiology for medicine but this video gave me an idea all about it! I finally understand it i'm more of a visual kind of learner. :D

this is the best explanation ever, I'm so grateful because i actually understand this now for my quiz! Thanks!!

Great lectures. You are an excellent teacher. Thank you.

This is a very nice video. It is very helpful and you make understanding of this information real easy. I really like your quiz section at the end. I am looking forward to watching your future videos.

Thank you for this video! It is extremely helpful for understanding action potential in a simpler way. I feel more confident about this topic now as I am studying for my molecular biology exam in college.

This is really great and clear, thank you.

really really easy to understand by ren' s video, many many thanks, helps a lot to my test😭

Good video. This is how it should be; simple and accurate. Bravo 👏🏼

The best video for A.P. Thank you Sir!

That was a great explanation, thank you so much. Your presentation is excellent, taking the time to review and the quiz were both so helpful.

You are the best teacher one could have..... 👍

Dude thank u u have been a big help let's hope I pass the test tomorrow

Literally a life saver!! Thank you so much for this!

clarity + education ,so very rare. Many thanks

fantastic video to understand action potentials. I always recommend it to my students.

Sir ur lecture compelled me to say that u are the great intelligent talented sole May Almighty bless u with more n more knowledge and success Thanks for being an angel in my thus time of difficulty

Thank you for such a thorough and easy to understand explanation!! :-)

Good work indeed... you've taught me alot ...thank you

Thank you so much sir.Only because of u I can understand the action potential.

i really understood what yo have taught with simple explanations with the help of illustrations which really helped a lot.thank you sir for endless effort in helping a number of students out there in getting this concepts. Vinaka and stay blessed.

You just made me understood action potential,Thank you very much 🙏🙏🙏

This was incredibly helpful! Reading from my textbook and trying to understand is so much more difficult, this video helped me so much. Thank you so much

Thank you so much, I now get this and feel so much more confident :)

Brilliantly explained once again! And I love your little recap after the theory! Very well done! Even though I am learning in my mother tongue, Romanian, the terms are similar, and helps me understand much better than in my own language! I would rather give my admission exam in English😂 Anyway,thank you for the time you invested in these videos!

Thank you for explaining this material. You explained it to offer me an epiphany of perspective. When that cell voltage switches quickly after being stimulated in 3:18, it is essentially pushing a potential energy (voltage) outward, which is a type of emitted wave. The little thing is "communicating" or "responding." Is that a characteristic of basic small life? At 10:35, suppose the inhibition gate did not work or were delayed AND the repolarization potassium channel 11:50 did not open or were delayed, would the voltage signal spike go a little higher and saturate, following a steady state limit over time (somehow proportional to incoming stimulus energy?), or would the signal voltage continue to spike higher and higher in amplitude? The potassium channel seems almost analgous to the dampening part of a mass-spring system? More powerful potassium channels would decrease the slope of the depolarization angle (and maybe even round out the peak)? Last question, does ANY stimulus above threshold voltage, trigger the cell 2:32, or does the stimulus need to have some characteristic voltage frequency above threshold?

You're a wonderful teacher, thank you!

That was really very helpful sir!!! It would be really great if you provide lectures regarding patch clamp technique (Voltage clamp, current clamp and patch capacitance). Because, your lectures are very easy to understand.

The best video for action potential

TQ!! Urs is 1 of the best on this topic. Will check out ur other videos too. Its soo nicely put n made it so clear...TQ again!! :)

Absolutely brilliantly put!

Thank you so much sir. This video is so good that it literally explained me something in 25 mins which I couldn't understand for the last few weeks! :)