My teacher spent like half an hour trying to explain this and failed miserably, but you sir, were successful in less than half the time. You're the man!!
And some teachers don't care if you understand, they just want to dazzle their students with their intelligence. Thankfully, there are fewer of those these days. AT least I am lucky.
Great video! thanks for the explanation. One thing though, the 4th sound has to do with the active filling of the ventricle (due to atrial contraction), not the filling of the atrium. Just like the 3rd is the passive filling of the ventricle, the 4th is the active. Thank you again for the great video!
No other video or college professor has been able to make this any more clear for me...and you did it in less than 14 minutes! I wish I would have found your videos earlier! This video makes the whole process so easy to understand. Your videos make an excellent reference. Thank you!
im watching all your muscle and heart videos one day before my finals and i must say iv learnt more in these past two hours than i have in the past 4months!!!!! THANK YOU
Helped me understand WAY better. My teacher brushed right through this part of the lesson so fast, it was hard for me to retain all of the useful information that I needed. Also just looking it over in the book trying to understand it by yourself is kind of challenging. Much thanks and appreciation!
I have studied medicine for 8 years and this is by far the best and easiest way to explain such an important subject! thanks to u Im confident with this subject for my step 1 :)
I can confidently say that the reason I ace the pressure-volume curve question on my exam was because of this video. I watched the vid about 4 times and had like Leslie's voice in my head while doing the question. Thanks for all you videos.
totally awesome and your voice is so smooth and easy to listen too, no jumping around , concise all the way through. WOW!!! is right , so glad I saw this and your other videos. Give yourself a you tube nobel prize.
Thank you SO MUCH for these videos, I have a particularly inconsistent and confusing teacher for physiology who is unable to organize the material in a way that makes sense and is cohesive. I wish I could have paid you the tuition instead as these videos are how I am really learning. I wish all teachers could teach the way you do. you are amazing! Truly, from the bottom of my heart, thank you!
Im P1 student, this part of lecture, my professor made it so complicated and confusing. I was struggling w it. I went through couple videos on youtube, but yours are the best. I love the tempo, clear explanation, visual aid you show. Thank you so much!
I want to thank you sooooo much for making this process as easy as possible. You have helped me with several topics and I really appreciate it. I needed help with this section because it is so many sections and it has a lot of details. I have a good understanding now of what is going on after many times of watching. THANK YOU SO MUCH FOR YOUR HELP!!!
Hey, Leslie. I'm a senior in college and am in Animal Physiology this semester and it's killing me! Thank you so much for taking the time to post all these videos. They are so helpful!! I just wish I had discovered these earlier and I'd probably have an A and not a B! :)
You are going heaven because of this video. I know you heard this hundreds of times but this is the best explanation of the graph so far. THANK YOU SO MUCH
I LIKE THAT YOU ARE COMMUNICATING IN A SIMPLER WAY FOR A PERSON LIKE ME WHO HAS A MIND THAT CAN ONLY RETAIN WHEN YOU EXPLAIN IT LIKE A CHILD. LOL.JK.. LOVE THE WAY UR EXPLANNATION. KEEP BEING A GOOD TEACHER....DON'T GIVE UP ON UR STUDENTS EVENTHOUGH IT FEELS AN INTERNAL LIFE OF TEACHING...DON'T LOSE THAT PASSION
I just discovered your channel. Great presentation with easy to absorb descriptions and instructional materials. I shall explore your other videos. Thank You!
Thank you so much! I could actually cry tears of joy! I might have a chance of passing my Physiology and Pharmacology exam with 50% failure rate now! THANK YOU!
Many have stated it, but I just want to reiterate, you sir are a great teacher. Took an absolutely brutal topic and made it cake. Thank you so much for that!!!
You're such an amazing teacher. Your lecture is truly clear and understandable. But I hope you would add in the subtitle or description to help foreign learners could understand better :D. Thanks a lot!!!
Hey, from what I know, after the atria filling (isovolumetric relaxation), the pressure rises in atria causing the AV valves to open and blood starts filling the ventricles. THEN the atria depolarizes and contracts finish filling the ventricle (sort of like topping it off)
Thank you for this awesome video on the cardiac cycle!! So much better than trying to get all this from a textbook, and the zooming/video overlays are really useful!
Thank you for this!!! I know you've just recently let go of this channel (so bittersweet but I wish you the best!), but I'm still sending you my thanks. Med student here, and I'm quite intimidated by cardiology. Thanks to your amazing video (and really friendly narration), I feel much more reassured :) May more good things come your way!! :)
Yes you are correct. The ventricle AV valves are open and at ventricular low pressure (after relaxation) so the blood will pour in from the atria. Remember you have all that blood coming into the atria from the Vena Cava which makes atria have more pressure than vent. In young people ventricles actually get over 80% of the blood before the atria contract. When you get older however the ventricles get stiffer so that atrial pumping mechanism becomes more important to squeeze that blood in.
![ออร่า (AURA) - JUEPAK feat. SARAN | [OFFICIAL MV]](http://i.ytimg.com/vi/RY9j7Lzp-FI/mqdefault.jpg)
You just explained basically 30 pages of reading in my A and P book in a 13 minute video. You are the man.
He really is the man lol. I'm so beyond happy I bumped into his videos.
My teacher spent like half an hour trying to explain this and failed miserably, but you sir, were successful in less than half the time. You're the man!!
this professor is a heavenly sent for all medical students.
THANK YOU I WAS LITERALLY CRYING ABOUT MY PHYSIOLOGY CLASS BUT NOW IM A LITTLE MORE HOPEFUL BRO
i thought i was the only one that cried :(
same!
Dang I hope you're not my doctor or nurse
are u a doctor now
This is one of the best videos on the cardiovascular system out there. Well done
My heart has gone through so many rhythms since watching this video. Makes you think a little!
I can't say anything more than: "Respect." . I do respect this man for what he is doing and I think we all should.
I have no words...just THANK YOU SIR!!!
You have helped me a lot during my physiology course. A real treasure, I just love you
Made an account just to say thank you. That made my life easier.
You are a great teacher. It is truly an art to be able to teach to others!
And some teachers don't care if you understand, they just want to dazzle their students with their intelligence. Thankfully, there are fewer of those these days. AT least I am lucky.
I've learned more from you in just one video than I have from a human physiology class in a four year university. Thank you soo much! :D
Great video! thanks for the explanation. One thing though, the 4th sound has to do with the active filling of the ventricle (due to atrial contraction), not the filling of the atrium. Just like the 3rd is the passive filling of the ventricle, the 4th is the active. Thank you again for the great video!
Was searching for lots of videos to explain the cardiac cycle, this is the best one so far! So detailed and you accent is lush :)
Thank you SO much! I might actually pass my anatomy and physiology test tomorrow now!
Woohooo! All the best!
+Interactive Biology i paaaaass it becauz of this video oh god thaaank u teacher !!!!!
Interactive Biology
Passing is shit. HD or death.
No other video or college professor has been able to make this any more clear for me...and you did it in less than 14 minutes! I wish I would have found your videos earlier! This video makes the whole process so easy to understand. Your videos make an excellent reference. Thank you!
This is the best A&P teacher on youtube.
im watching all your muscle and heart videos one day before my finals and i must say iv learnt more in these past two hours than i have in the past 4months!!!!! THANK YOU
You are a lifesaver!!! I plan on using all our videos to help me with my physiology class. (My professor assumes we already know all of this)
Helped me understand WAY better. My teacher brushed right through this part of the lesson so fast, it was hard for me to retain all of the useful information that I needed. Also just looking it over in the book trying to understand it by yourself is kind of challenging. Much thanks and appreciation!
I have studied medicine for 8 years and this is by far the best and easiest way to explain such an important subject! thanks to u Im confident with this subject for my step 1 :)
I can confidently say that the reason I ace the pressure-volume curve question on my exam was because of this video. I watched the vid about 4 times and had like Leslie's voice in my head while doing the question.
Thanks for all you videos.
totally awesome and your voice is so smooth and easy to listen too, no jumping around , concise all the way through. WOW!!! is right , so glad I saw this and your other videos. Give yourself a you tube nobel prize.
Thank you SO MUCH for these videos, I have a particularly inconsistent and confusing teacher for physiology who is unable to organize the material in a way that makes sense and is cohesive. I wish I could have paid you the tuition instead as these videos are how I am really learning. I wish all teachers could teach the way you do. you are amazing! Truly, from the bottom of my heart, thank you!
Out of all the videos I've watched on youtube to get this topic you eased this whole process for me. A HUGE THANKS, DUDE)
Im P1 student, this part of lecture, my professor made it so complicated and confusing. I was struggling w it. I went through couple videos on youtube, but yours are the best. I love the tempo, clear explanation, visual aid you show. Thank you so much!
I want to thank you sooooo much for making this process as easy as possible. You have helped me with several topics and I really appreciate it. I needed help with this section because it is so many sections and it has a lot of details. I have a good understanding now of what is going on after many times of watching. THANK YOU SO MUCH FOR YOUR HELP!!!
Hey, Leslie. I'm a senior in college and am in Animal Physiology this semester and it's killing me! Thank you so much for taking the time to post all these videos. They are so helpful!! I just wish I had discovered these earlier and I'd probably have an A and not a B! :)
@ToRnAdO0504563168 Thanks for the feedback. Glad you are enjoying it! Stay tuned for many more!
Very beautifully explained. Thank you for sharing.
This explains so much! Exactly what’s covered on my physiology exam thank you!
You are going heaven because of this video. I know you heard this hundreds of times but this is the best explanation of the graph so far. THANK YOU SO MUCH
You are amazing! I am much less overwhelmed now than I was 14 minutes ago. Thanks for breaking this down so well.
That was the best video I have watched on Wiggers! Thank you!
Excellent teaching of the Cardiac cycle, may God continue to bless you with your great generosity
Got an exam on this in a few days and your videos will get me that A. Thank you so much for making these. You are incredible.
It was definitely intimidating at the start but it's amazing how it all makes sense at the end of the video. Thank you very much
This is the best description I have found so far, you did a very good job explaining this! Thank you so much.
I just got a decent grade in my last anaotmy exam! Thanks soo much to this channel !!! I have another exam comming up and this vid is awsome!
I love love love this teacher and entire description! Thank you for explaining it all at a glance!
I LIKE THAT YOU ARE COMMUNICATING IN A SIMPLER WAY FOR A PERSON LIKE ME WHO HAS A MIND THAT CAN ONLY RETAIN WHEN YOU EXPLAIN IT LIKE A CHILD. LOL.JK.. LOVE THE WAY UR EXPLANNATION. KEEP BEING A GOOD TEACHER....DON'T GIVE UP ON UR STUDENTS EVENTHOUGH IT FEELS AN INTERNAL LIFE OF TEACHING...DON'T LOSE THAT PASSION
This is hands down the best video I have seen for explaining this process. Thank you so much!
I think your speed is great. It allows me time to digest the information. Great job!!
Remember walking into class late with all this stuff written on the board. i was so lost... not anymore. thanks a bunch.
You are awesome! I wanted this for my physiology essay.BIG hug for you. You explained it million times better than the physiology textbook.
Glad to see this vid. Light teaching yet fraught of info and detailed process helps me go through my self studying for my practical exam.
I just discovered your channel. Great presentation with easy to absorb descriptions and instructional materials. I shall explore your other videos. Thank You!
I finally understand it now! Best cardiac cycle video ever!
I needed a quick refresher and this really helped. Best video I've seen on the subject.
Thanks for walking through this. Saved me a lot of study time.
I have no words to explaine to you, how mucho you have helped me and continue to do so. THANK YOU VERY MUCH FOR SUCH A GOOD HEP
Thank you for such a great explanation, you taught me better than my biology teacher !
I’m way too lazy to listen to someone explain BUT this guy is a legend. He broke it down, explained well. Watch it.
It is really the type of processus that needs to be broken down ... and you do it very well, slowly and clearly. Thanks so much for your help !!
intimidating less but helped me understand better, thank u so much!!!! :)
Glad to help :)
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Thank you so much! I could actually cry tears of joy! I might have a chance of passing my Physiology and Pharmacology exam with 50% failure rate now! THANK YOU!
Bio final in two days...u r a life saver!!can't thank you enough!:) :)
Thank you for making this video! Made the diagram a lot more approachable when broken down into more simple parts. Much appreciated!
You have made this so simple to understand, thank you so much!
This video saved my life. Thank you sooooooo much
Very well explained. Simple and to the point! Cheers!
Best video on cardiac cycle, hands down!
This is seriously amazing and helped me understand my physiology lecture. Thanks!
it was so intimidating when i first saw it, but now it looks much better, free subscription for you
This is amazing! Thanks a lot!
You're the best teacher ever.
I've been having a hard time understanding the cardiac cycle and this helped a lot. Thank you!
I love your videos Leslie Samuels, you have a wonderful voice and way of speaking that keeps me intrigued!!!!
Thank you soooo much!!!! This helped clear up some confusion before my exam!
You nailed it easy breezy,THANK YOU SO MUCH!!!!!!!!! more to come
thank u indeed , an easy and simple way of teaching , but wishing a richer scientific subject .
thank you so much for posting a video on the cardiac cycle, the graph is way less confusing!
Many have stated it, but I just want to reiterate, you sir are a great teacher. Took an absolutely brutal topic and made it cake. Thank you so much for that!!!
so helpful! you tie everything together so clearly! thank you!
I seriously love your videos! Thank you for doing this! You are such a great help to students and anyone who just wants to learn everywhere!
Thanks for the video. Really helped clear the process up.
This was extremely helpful. I've watched it several times. THANK YOU!!!!!
Great break down. I was lost in class but now I have it.
You just saved my life!! Thank u so much, sir!!
thank you for the video!! I understood so much more from this than a two hour lesson from my teacher ;w;
I've found my new bestie!!!! Hello A. Thank you Sam. So clear, so concise, so simple.
Sir, you are AMAZING!!! Thank you for making this very easy and fun to understand!!
You're such an amazing teacher. Your lecture is truly clear and understandable. But I hope you would add in the subtitle or description to help foreign learners could understand better :D. Thanks a lot!!!
Hey, from what I know, after the atria filling (isovolumetric relaxation), the pressure rises in atria causing the AV valves to open and blood starts filling the ventricles. THEN the atria depolarizes and contracts finish filling the ventricle (sort of like topping it off)
Thank you for such informative, and easy to understand videos. You really do a wonderful job. Keep it up.
Thank you for this awesome video on the cardiac cycle!! So much better than trying to get all this from a textbook, and the zooming/video overlays are really useful!
This is a good video for learning the basics fast.. Thanks for sharing and keep up the good work!
Amazing explanation. You're a great teacher
Thank you very much. I hope you take pride in helping people!
@MaficSun You're welcome! Stay tuned. We have more Biology videos to be uploaded very soon! :)
What took my professor 2 hours to explain, you answered in 13 minutes. THANK YOU KIND SIR!!!! Saved in dental school
Glad to help 👍
makes it crystal clear...you should be teaching at my college!
Thank you for this!!! I know you've just recently let go of this channel (so bittersweet but I wish you the best!), but I'm still sending you my thanks. Med student here, and I'm quite intimidated by cardiology. Thanks to your amazing video (and really friendly narration), I feel much more reassured :) May more good things come your way!! :)
Great job on explaining the cardiac cycle. I was worried about learning the wiggers diagram but now with your help I feel I understand it better.
Yes you are correct. The ventricle AV valves are open and at ventricular low pressure (after relaxation) so the blood will pour in from the atria. Remember you have all that blood coming into the atria from the Vena Cava which makes atria have more pressure than vent. In young people ventricles actually get over 80% of the blood before the atria contract. When you get older however the ventricles get stiffer so that atrial pumping mechanism becomes more important to squeeze that blood in.
These videos are amazing and so helpful! Thank you so much for all your hard work!
Thank you! The best explanation I've seen thus far
so much easier to understand now than when my physiology professor explained it
I was reading guyton ...uff..you make this graph easier for me.thank you...
You're videos are extremely helpful! Thank you so much!!
you really made it fun not like our prof. in collage, keep up the nice work
its really a beneficial channels ever .... my appreciation for you .... i really was confused but after watching this video I really understood well