Action Potential In SA Node || Primary Pacemaker of the Heart

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Video Summary:
SA node is a normal pacemaker of the heart. Action potential in the SA node involves slow pacemaker potential due to slow entry of Na and Ca, upstroke due to rapid influx of Ca and Repolarization and hyperpolarization due to cessation of Ca entry and exit of K ions. Then the K efflux decreases and the slow entry of Na and Ca again brings the potential to a threshold to trigger the next action potential. Thus the SA node keeps generating action potential on its own.
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Chapters
00:00 Intro
00:19 Pacemakers in Heart
02:01 SA Node Intro
02:18 Ions Involved in Action Potential
03:06 Phase 4 of Action Potential
04:09 Phase 0 of Action Potential
04:21 Phase 3 of Action Potential
05:05 Next Action Potential
05:37 Heartbeat
06:10 Summary
Dr. Vipul Navadiya
DISCLAIMER: This video is for education purposes only. Although every effort is made to ensure the accuracy of the material, viewers should refer to the appropriate regulatory body/authorized websites, guidelines, and other suitable sources of information as deemed relevant and applicable. In view of the possibility of human error or changes in medical science, any person or organization involved in the preparation of this work accepts no responsibility for any errors or omissions, or results obtained from the use of information in this video.

[@anjalibhandari3851]

Was struggling to understand it. You explained everything so well! Thank you :)

[@Mercury6_]

I’m basically a cardiologist now

[@NyiHtet-yl4jq]

I really enjoy your concepts.The most favorite part is your gists really filled with goodwill.

[@Fahad-tn1el]

One of the easy and best video on UA-cam till now

[@user-sz5dt9ih7f]

Your explanation is simple and elegant. Thank you so much, sir, for making such an excellent video!!!

[@verisa19]

what a good video!! My teacher show us this in class, and the next friday I've my secondo exam with her, and i wasn't understand how to SA node can produce it's own PA. Thank you a loooot!

[@hananmohamed9302]

Thank you so much this video was amazingly helpful!!

[@miraloona2159]

This vedio is amazing,helpful and very easy to understand !thank you soo much

[@user-gv4ly3vj9u]

Very helpful

[@vpriya1992]

Wonderful video !!!!!! Thank you so much 🤗🤗🤗🤗

[@NonstopNeuron]

Most welcome 😊

[@Karm3626]

Many thanks , that’s was really helpful 🙏🏻🙏🏻

[@NonstopNeuron]

You're welcome!

[@sharadsagare8729]

Very nice knowledge given 👍

[@garikapatirachana4627]

Thank you so much

[@shanikuksntoks3093]

Thanks for this information.

[@NonstopNeuron]

most welcome

[@psrfscmm]

Thnku Soo much❤❤

[@yadavsaurabh26]

Amazing 👏 🙀

[@blightu]

thank you sooooooooooooooooooooooooooooooooooooooooooooo much

[@boboyastar9750]

Thank❤🌹🙏 you

[@sudhinanair3134]

Superb

[@tatiana4067]

Actually saved my Biomedical Bmc degree

[@lubkhan2512]

❤

[@DoctorShumaila]

Bt how Sodium is leak through the cell membrane bcoz membrane are alway permeable to potassium not for Na could you explain plzz

[@akhilgupta8382]

Yes that is right membrane is permeable to potassium only when it is at rest but when a stimulus is generated it increases the conductance of sodium resulting in sodium influx

[@teukufaathir2226]

Very good and clear explanation sir, but i still wondered is the action potential that generated in SA node also have a "refractory period" like the action potential that generated in cardiac myocte ?because from my persepective if we try to compare the graphic between them (sa node vs myocyte) we see that there is almost no actual "resting phase" between the repolarization and the next depolarization

[@teukufaathir2226]

pardon for my english

[@arpitaagrawal6277]

DO u have your account on Google scholar ?

[@NonstopNeuron]

No. Why?

[@Wanttogrow1008]

Wonderful presentation 🤝 though if you speak dramatically

[@montazaraldujeili2475]

king kong

[@Super_shnaps]

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