Depolarization and Repolarization of Heart: Action Potential (Atrial & Ventricular) Animation

Depolarization and repolarization of the heart action potential (atrial and ventricular contraction and relaxation) anatomy and physiology explained.

Learn how the depolarization and repolarization of the heart works with this simple animation and lecture. The depolarization and repolarization process forms the PQRST waveform on the ECG / EKG.

This video discusses atrial and ventricular depolarization and repolarization. Depolarization of myocardial cells leads to the contraction of the atria and/or the ventricles. Repolarization of myocardial cells leads to the relaxation of the atria and/or ventricles.


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[RegisteredNurseRN]

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[theaashipriya]

I saw about 4 to 5 videos on heart repolarization and depolarization but the doubt still remained in my mind but when I saw this one it was all clear thanks a lot

[huipinloh]

Thank you Sarah, your 4:15 minutes video saved me reading pages of book explaining about ECG. After watching your video, it makes more sense to me when I go back and read this chapter.

[bradybesco]

You have been a great resource for the HS Anatomy and Physiology course that I teach. Thank you for making these!

[hafeezullah]

Thanks mam it's really in our syllabus in Final exam so it's understood for me ♥️Love from pakistan 🇵🇰

[destineywells]

I literally was praying for a video of this nature. Thank you so much 🙏🏽 You are much appreciated❤️❤️

[chuckdon]

Thank you so much. Your explanation of the cardiac cycle was succinct, direct and easier to understand.

[paulitrokets]

this makes so much sense now! and the accent is a big help in paying attention jajaj love it!

[shantanushukla]

Thank You Serah Mam Love From INDIA...2 Million Soon...😊🙏

[GreenBarbie]

Thank you!! The pictures you added are great! They really help me, a visual person, understand and remember this concept. I have learned it in the past, got it, then it went away. I feel like you explained it and gave visuals that I can finally have it stick!

[valerielyda]

Great use of co-ordinating waves with cell physiology. Pleasant speaking voice.

[missmiss]

Starting my Residency on Med/Tele unit next week and we have an EKG exam to pass. This video was very helpful thank you!

[mubangamusakalu]

Learning a lot from you and has really helped really appreciate from Zambia 🇿🇲

[gwongjohn]

Watching from Nigeria, west Africa. Registered Nurse.

[Naturalistdoctor]

Thank you mam for teaching us these hard topic in just simpler way 😊

[XsarahX]

In 4 minutes you explained what my teacher took 30+ mins to explain. THANK YOU

[MuhammadArshad-ultd]

Thanks 😊 for good accent and good knowledge 👌 May Allah bless you with happiness...

[RubiksBotES]

This is very well explained! Thank you. I could listen to your voice all day lol

[aolivares]

thank you so much!! I really struggled to conceptualize this concept before watching this video!

[Lifesucks]

Thanks a lot it really helped me a lot💕 lots of love from India ❤