Ventricular Action Potential | Cardiac Action Potential | Part 1 | Phases | Cardiac Physiology

✨This video is on the phases of the ventricular action potential. Part II will be on the Sinoatrial Node Potential. I hope it helps! ☀️

🌟What's in this video?
0:00 - Intro
0:09 - Action Potentials Recap
3:06 - Phases of the Ventricular Action Potential
4:12 - Ionic Basis of the phases
6:21 - Refractory Period
7:16 - Action potential and Contraction

✨ Other videos you may need:
🔅Nerve-Muscle Physiology :

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📚Factual References & for Further Reading:
- Guyton and Hall Textbook of Medical Physiology
- Ganong’s Review of Medical Physiology
- Boron and Boulpaep Medical Physiology
- Costanzo’s Textbook of Physiology
- Openstax Anatomy and Physiology
- Openstax Biology
(The last two are links to open-source references. They are NOT affiliate links)

🌤 Note:
These are just a collection of my notes. So use them the way you would use borrowed notes from a friend. 📝
The images in this video are hand-drawn for illustration and explanation only.✍️ Hence, they may not be anatomically accurate. I am just one person making these videos. If there are any errors, that is unintentional. I try super hard to avoid them. Please let me know if you find any, so it gets clarified for other viewers. Science constantly evolves and changes. New discoveries are made everyday. So some of the information in these videos may become outdated. If you notice that, please let me know so I can update them.

⚡️Disclaimer:
These videos are NOT a substitute for a medical textbook. Textbooks are written by experts (which I do not claim to be), edited, proofread and referenced. Please use them.
The information has been sourced from multiple references as mentioned above. I draw all the pictures myself. But if I have inadvertently infringed on any copyright, that is completely unintentional. I only make these videos to impart education. If I have accidentally violated copyright in any way, do let me know so I can make the necessary changes or give credit to anyone who is owed the same.
These videos are NOT intended for patient education. They are NOT a substitute for diagnosis and treatment by a licensed medical professional. Always seek the advice of a qualified health care provider for any questions you may have regarding any medical condition, so that they can address your individual needs.

🔅They are ONLY meant to help students of medicine and health sciences with studying, and should be used for just that purpose and absolutely nothing else.

Byte Size Med. All Rights Reserved.

[candyb]

literally have been avoiding learning action potentials for years through all my science classes and now i finally get it, such a great video

[dimmap]

I love how calm she is in explaining this, thank you Ma'am 🙏

[AbdulRahman-sezo]

Part 2 please and cardiac cycle please and also vascular physiology 😭😭your videos are amazing why am I just coming across them few months to my exams

[goodflower]

Studying for my physiology exam... you're a lifesaver!

[ellenfox]

Best explanation I've seen so far! This really helped me to separate contractile from conducting cells. I really appreciate it! 🙂

[TechBud]

You did a great job explaining, the video is short and brief. Very helpful thank you!

[arhamsajid-njzh]

I was very confused about action potential. this vedio helps me a lot.
thank you so much for this.

[sagecontreras]

your calm voice makes me not stressed out learning this, very helpful thank you!!!

[um.u]

the best explain ever👌
thanks a lot 🙏

[Outcaaast]

your videos, explanations, and illustrations are SO SO helpful

[Potnoodle]

as a med student this is saving me in revising for my finals!!!

[eddieleon]

Really good explanation, with easy and understandable animations. Thank you!

[minadz]

very helpful, thank you!
this video series came just in time

[godwindabere]

Neat and succinct. Keep up the good work.

[SomaliFairyTales]

Thank you so much i've been watching so mamy video this mede me Memorize it thank you so much

[Valentina-qire]

super helpful and well explained, thank alot

[palanisamyhariharan]

Amazing work . Atlast I came to know that this channel can save me from havoc😂

Thank you so much for this!! It has helped me so much 🫀

[joshholymoses]

Excellent video! Made the textbook make much more sense. I'm still not understanding when potassium returns to the cell. Is this after the hyperpolarization with the Na⁺/K⁺-ATPase pump?

[paulsparrow]

Why is the resting membrane potential negative 70 mv? The cell is filled with potassium which is a cation. Also how/when does potassium renter the cardiac cell?