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!!
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 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.
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 :)
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!
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!
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.
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
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!
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 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
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!!!
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!!!
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
After perusing many cardiac cycle videos on here, I can say this is the most succinct and digestible one. Some videos on here have big errors so be careful. This video is what you need!
Yayyyy, Glad to hear that. Did you see my recent video on the cardiac cycle? I decided to revisit the topic here - th-cam.com/video/KmNHqqrFqG8/w-d-xo.html
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!!!
I just discovered your channel. Great presentation with easy to absorb descriptions and instructional materials. I shall explore your other videos. Thank You!
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.
Thanks man am an mbbs uni student and am studying the cvs module now this diagram was getting on my nerves i swear but u man u deserve a medal for that video physiology of the cvs is in my pocket now :D thanks brother ❤️
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!! :)
@TimmysMummy Ouch, sorry to hear that. Being nervous definitely impacts the way you do on an exam. But over time, it can get better, especially if you study EXTRA hard so that you are extra prepared.
The purpose of the channel is to help people understand biology. So I try to do what I can. I can't get to EVERY comment, but I try to offer value when I can.
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 so very much for this video sir! We had this same diagram presented to us in our NP advanced pathophysiology/physiology course and the instructor just blew through it as if it was something we had been previously exposed to. The only thing that was clear was that it supposedly represented the cardiac cycle. Thanks to your video I can now go back to the diagram and actually UNDERSTAND what's going on. Thank you so very much!
All questions are answered in the Interactive Biology forums from now on. Go to the website in the description and then visit the forum. This is to make it as efficient as possible as we have multiple people over there to help answer questions. All the best
WOOOOOWWW you helped me A LOT! Thank you very very much! I'm a brazilian biomedic student and I had some difficulties regarding the cardiac cycle but now I don't. :D Excellent video! Congrats! My best to you and I'm so sorry if I wrote something wrong in English.
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.
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
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.
This is one of the best videos on the cardiovascular system out there. Well done
@ToRnAdO0504563168 Thanks for the feedback. Glad you are enjoying it! Stay tuned for many more!
I can't say anything more than: "Respect." . I do respect this man for what he is doing and I think we all should.
Made an account just to say thank you. That made my life easier.
My heart has gone through so many rhythms since watching this video. Makes you think a little!
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!
This is the best A&P teacher on youtube.
You have helped me a lot during my physiology course. A real treasure, I just love you
I’m way too lazy to listen to someone explain BUT this guy is a legend. He broke it down, explained well. Watch it.
I have no words...just THANK YOU SIR!!!
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.
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 :)
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!
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
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 :)
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!
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.
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
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)
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!
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)
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 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
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.
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!!!
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 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 !!
You are awesome! I wanted this for my physiology essay.BIG hug for you. You explained it million times better than the physiology textbook.
You are amazing! I am much less overwhelmed now than I was 14 minutes ago. Thanks for breaking this down so well.
This is hands down the best video I have seen for explaining this process. Thank you so much!
Excellent teaching of the Cardiac cycle, may God continue to bless you with your great generosity
This is the best description I have found so far, you did a very good job explaining this! Thank you so much.
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!
I think your speed is great. It allows me time to digest the information. Great job!!
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
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.
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!!!
What took my professor 2 hours to explain, you answered in 13 minutes. THANK YOU KIND SIR!!!! Saved in dental school
Glad to help 👍
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 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!
This explains so much! Exactly what’s covered on my physiology exam thank you!
That was the best video I have watched on Wiggers! Thank you!
Remember walking into class late with all this stuff written on the board. i was so lost... not anymore. thanks a bunch.
it was so intimidating when i first saw it, but now it looks much better, free subscription for you
@CKB06 You are very much welcome! Stay tuned for many more :)
Bio final in two days...u r a life saver!!can't thank you enough!:) :)
After perusing many cardiac cycle videos on here, I can say this is the most succinct and digestible one. Some videos on here have big errors so be careful. This video is what you need!
Yayyyy, Glad to hear that. Did you see my recent video on the cardiac cycle? I decided to revisit the topic here - th-cam.com/video/KmNHqqrFqG8/w-d-xo.html
Very beautifully explained. Thank you for sharing.
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!!!
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
Thanks for walking through this. Saved me a lot of study time.
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 for making this video! Made the diagram a lot more approachable when broken down into more simple parts. Much appreciated!
I needed a quick refresher and this really helped. Best video I've seen on the subject.
I've been having a hard time understanding the cardiac cycle and this helped a lot. Thank you!
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.
I usually don't like videos longer than a few minutes, but this is such a good video! It definitely beat the lecture (and was way shorter) :)
I love your videos Leslie Samuels, you have a wonderful voice and way of speaking that keeps me intrigued!!!!
Thanks man am an mbbs uni student and am studying the cvs module now this diagram was getting on my nerves i swear but u man u deserve a medal for that video physiology of the cvs is in my pocket now :D thanks brother ❤️
This is amazing! Thanks a lot!
You're the best teacher ever.
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.
Thank you for such a great explanation, you taught me better than my biology teacher !
I finally understand it now! Best cardiac cycle video ever!
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!! :)
@TimmysMummy Ouch, sorry to hear that. Being nervous definitely impacts the way you do on an exam. But over time, it can get better, especially if you study EXTRA hard so that you are extra prepared.
thank you so much for posting a video on the cardiac cycle, the graph is way less confusing!
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!
intimidating less but helped me understand better, thank u so much!!!! :)
Glad to help :)
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thank u indeed , an easy and simple way of teaching , but wishing a richer scientific subject .
This is seriously amazing and helped me understand my physiology lecture. Thanks!
This video is 10 years old and you are still replying to comments, you are a legend!
The purpose of the channel is to help people understand biology. So I try to do what I can. I can't get to EVERY comment, but I try to offer value when I can.
Best video on cardiac cycle, hands down!
@miiigoreng You're welcome! Stay tuned for more :)
You have made this so simple to understand, thank you so much!
This video saved my life. Thank you sooooooo much
I've found my new bestie!!!! Hello A. Thank you Sam. So clear, so concise, so simple.
Thank you so much... I have my cardiology viva tomorrow.... It helped alot 🙌🏻
Great break down. I was lost in class but now I have it.
@NYESTRELLA Glad to know it's helping. All the best!
its really a beneficial channels ever .... my appreciation for you .... i really was confused but after watching this video I really understood well
Thank you soooo much!!!! This helped clear up some confusion before my exam!
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)
Heyy !!
I'm a student from India
Thankss a lotttt ✌
Wonderfully explained
It has helped me a lotttt
This was extremely helpful. I've watched it several times. THANK YOU!!!!!
you really made it fun not like our prof. in collage, keep up the nice work
Very well explained. Simple and to the point! Cheers!
thank you for the video!! I understood so much more from this than a two hour lesson from my teacher ;w;
You just saved my life!! Thank u so much, sir!!
makes it crystal clear...you should be teaching at my college!
Thank you so very much for this video sir! We had this same diagram presented to us in our NP advanced pathophysiology/physiology course and the instructor just blew through it as if it was something we had been previously exposed to. The only thing that was clear was that it supposedly represented the cardiac cycle. Thanks to your video I can now go back to the diagram and actually UNDERSTAND what's going on. Thank you so very much!
You nailed it easy breezy,THANK YOU SO MUCH!!!!!!!!! more to come
All questions are answered in the Interactive Biology forums from now on. Go to the website in the description and then visit the forum. This is to make it as efficient as possible as we have multiple people over there to help answer questions.
All the best
WOOOOOWWW you helped me A LOT! Thank you very very much! I'm a brazilian biomedic student and I had some difficulties regarding the cardiac cycle but now I don't. :D Excellent video! Congrats! My best to you and I'm so sorry if I wrote something wrong in English.