Cardiovascular | Cardiac Cycle

Ninja Nerds!

Join Professor Zach Murphy in this lecture where we discuss the cardiac cycle along with clinical correlates that can occur. We hope you enjoy this lecture and be sure to check out all of our social media pages and ways to support us below!

References:
● Le T, Bhushan V, Sochat M, Chavda Y, Zureick A. First Aid for the USMLE Step 1 2018. New York, NY: McGraw-Hill Medical; 2017
● Standring S. Gray's Anatomy: The Anatomical Basis of Clinical Practice. Elsevier Health Sciences; 2016
● Leslie P. Gartner, James L. Hiatt. Color Textbook of Histology. New York (NY): Grune & Stratton Inc.; 2006
● Maceira AM, Prasad SK, Khan M, Pennell DJ. Reference right ventricular systolic and diastolic function normalized to age, gender and body surface area from steady-state free precession cardiovascular magnetic resonance. Eur Heart J .2006; 27(23): p.2879-88. doi: 10.1093/eurheartj/ehl336.
● Marieb EN, Hoehn K. Anatomy & Physiology. Hoboken, NJ: Pearson; 2020.
● Boron WF, Boulpaep EL. Medical Physiology.; 2017.

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[yasminali]

it's honestly amazing when you find someone who actually cares about what they are explaining. I always used to wish I had someone to explain it to me like this.... then I found your channel. A comment section isnt enough to express how much i appreciate your please continue to explain these concepts with the care that you do

[johnclark]

You don’t need subscribers sometimes you need pray from medical students in terms like May God bless you with health, wealth, joy, laughter, prosperity and much more...

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[naaengmann]

What kind of teacher is this?? Why am I paying my school when i could be paying you. Sir, I must say you are an excellent excellent excellent teacher. I don't know what I would do without you and your wonderful videos. Thank youu soooo much

[mikepenalosa]

You are the reason I can continue my career goals and make my family proud. You are also the reason why humanity will receive quality healthcare. Thank you.

[ASalfity]

Brief Table of Contents:

0:10 – Cardiac Cycle Definition ( ~ .8 Seconds)
1:05 – Mid to Late Ventricular Diastole (diastole = relaxation)
- (period of ventricular filling)
- 5:20 – P Wave EKG
6:35 – Isovolumetric Contraction
- 11:20 – “Lub” (S1)
12:05 – Mid to Late Ventricular Systole
- (ventricular ejection)
- 16:30 – QRS Complex EKG
16:50 – Isovolumetric Relaxation
- 21:40 – “Dub” (S2)
- 22:50 – T Wave EKG

You may wish to add this to the description or create your own more detailed version. Thanks for these videos.

[dayennyd]

Things I've noticed. I learn so well with pictures and step-by-step explanation that this is much better than the power points we get in medical school. I feel like i learned so much!! Wish there was a wiggers integration with this but I can now look at one (using your EKG videos too) and get it regardless. THANK YOU THANK YOU! YOU'RE SO AWESOME!

[amandawilliams]

I have had the hardest time understand the cardiac cycle in it's entirety. I watched your videos and you are great at explaining clearly, so those of us that "just don't get it, actually finally have our ah-ha moment". Thank you so much!

[ArundhotiRay]

I do regret why I didn’t found this channel earlier. Thank you so much professor, for being such a wonderful teacher😊

[ElliePearl]

Teaching is an ART FORM! People assume that just anyone can do it, and it's not true. This video was excellent and so informative. It was an example of great teaching. I hope one day more attention will be brought to the importance of fine teachers and that they get paid more, because they truly make all the difference. I'm so grateful for this video. Thank you very much!

[sander_bouwhuis]

You explain it EXTREMELY well/clearly! Especially the fact that you leave a tiny pause before you reveal the answers so that we as the viewers can come up with the answers ourselves. That is REALLY fantastic as it means we can actively participate instead of just passively view the material.

[MrFares]

This channel is better than my whole UNIVERSITY!!!!
THANK YOU ❤, and please don't stop making amazing videos like that

[sebcodestheweb]

Your teaching style is brilliant, I am impressed by how you manage to explain this topics so intuitively and easy without oversimplifying it and keeping it thorough.

[maheen]

God bless you - can't imagine doing medical school without you. You can explain things better in 20 minutes than professors can't do in hours!!!

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I'm a medical assistant student and right now my school is going through a transition from one teacher to another. Unfortunately the new teacher is not working out well at all. You are so so helpful to me learning, I just had to express my many thanks to you and your videos. I'm learning everything I need to learn . I appreciate you!

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I'm a med student from Turkey. I watched your cranial nerves videos and they were very beneficial for my committee exam. Now I'm watching this 😃 You're very perfect in teaching 😁 Please keep going on for us 👏

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I have been reading my notes over and over again for an hour trying to understand nth but now I understand everything in 23 mins. Thanks so much for your teaching you save our lives!

[richarddekoa]

I'm not one to comment on YT videos but this video right here Sir has prompted me to do so. The explanation was clear and easy to understand LITERALLY!!! Mad love from a student in Fiji who is in Med school. Vinaka

[paulp]

It is so much easier and clearer to learn watching Ninja Nerd lecture than watching a lecture in person and reading a textbook.

I've watched about half a dozen videos on the cardiovascular and circulatory system today to supplement parts of the textbook I didn't quite understand.

Thank you so much