Action potential of cardiac muscle and SA Node - Usmle step 1 CVS Physiology

📌 𝐅𝐨𝐥𝐥𝐨𝐰 𝐨𝐧 𝐈𝐧𝐬𝐭𝐚𝐠𝐫𝐚𝐦:- drgbhanuprakash
📌𝗝𝗼𝗶𝗻 𝗢𝘂𝗿 𝗧𝗲𝗹𝗲𝗴𝗿𝗮𝗺 𝗖𝗵𝗮𝗻𝗻𝗲𝗹 𝗛𝗲𝗿𝗲:- t.me/bhanuprakashdr
📌𝗦𝘂𝗯𝘀𝗰𝗿𝗶𝗯𝗲 𝗧𝗼 𝗠𝘆 𝗠𝗮𝗶𝗹𝗶𝗻𝗴 𝗟𝗶𝘀𝘁:- linktr.ee/DrGBhanuprakash
Cardiovascular physiology - Action potential of cardiac muscle and SA Node , medical animations
Pacemaker cells (e.g., sinus node) of the conduction system of the heart autonomously and spontaneously generate an action potential that spreads throughout the myocardium.
The electrical excitation of the myocardium results in its contraction (electromechanical coupling).
The phase of relaxation prevents immediate re-excitation (refractory period).
Conducting system of the heart
----------------------------------------------------
See structures of cardiac conduction system: collection of nodes and specialized myocytes that initiate and coordinate contraction of the heart muscle
Normal course of electrical conduction: sinus node (pacemaker) creates an action potential → signal spreads across atria and causes their contraction → signal reaches AV node and is slowed down → AV node conducts the signal to bundle of His down the interventricular septum to Purkinje fibers in myocardium → they spread the signal across the ventricles → the ventricles contract (electromechanical coupling)
#cvsphysiology #physiology #cardiovascularphysiology #usmlephysiology #usmle #usmlestep1 #medicalphysiology #actionpotentialofcardiacmuscle #actionpotentialofsanode #physiologyanimations #fmge #neetpg #snnode #avnode #cardiacmusclephysiology #cvsusmle #cvsphysiologyusmle

[@doctorbhanuprakash]

Join this channel and Get Access to Membership perks 👇👇👇👇 👇Join today to get premium access👇👇👇👇👇 kzbin.info/door/G5TBPANNSiKf1Dp-R5Dibgjoin

[@lawrenceezequiel7271]

sorry to be off topic but does anybody know a way to get back into an Instagram account?? I stupidly forgot the account password. I would appreciate any tips you can give me.

[@deepikarani4403]

Excellent sir excellent

[@mbbsinrussia7585]

the way u teach....& energy level u spread 💯 ✨

[@hopedream7749]

Best best best video ever in youtube n even in practical life this is the best video ever to understood the basic of conduction system of heart.

[@thivyakaruppusamy2909]

Its very better than western country videos... Thank u very much sir.. And please enlighten us in medical field

[@uswaamjad]

Nobody could explain this better than you Sir! Hats off Sir! Huge respect from Pakistan 🇵🇰 ❤️

[@doctorbhanuprakash]

Tysm

[@chrisemovon4122]

D best video av seen in a while , u r a great teacher , concept driven home easily .thank u so much sir

[@doctorbhanuprakash]

Thank u so much for ur appreciation

[@doctorbhanuprakash]

Medvizz Animated medical video lectures : 1200+ complete animated medical Video lectures includes all high-yield topics enough to cover all contents of mbbs and usmle step 1 . Subjects covered are - Anatomy , Physiology , Biochemistry , Pathology , Pharmacology , Genetics , Immunology , Microbiology , Histology , Embryology Clinical cases with detailed explanations for relevant topics High-yield notes for all above subjects Question bank wich covers all aspects of NEETPG , USMLE and PLAB software of Question bank mimic actual exam experience of respective licensing exams www.medvizz.com [phone] ( whatsapp )

[@hasanasif235]

It clears my concept, thank you so much sir.

[@samiurrahman5657]

Excellent.. Nobody could explain better than you.. Love from 🇧🇩

[@doctorbhanuprakash]

Tysm

[@maggie8144]

Crystal clear Hats off to ENTIRE TEAM ANIMATION SPECIALLY 👌👌👌👌

[@doctorbhanuprakash]

Tysm

[@TheSenior1955]

Excellent and simple presentation with high quality animation

[@neethu9981]

very well explained in a very simplified manner, thank u sir

[@kannankamal5446]

Very very rare concept not able to know by studying books or during other staff lectures,very great

[@doctorbhanuprakash]

Tysm

[@kannankamal5446]

Doc its an honour to get a reply from you,bless us with new concepts with your next video

[@sarath7397]

Dr. Bhanu, I like your video so much. It's very very clear than the others I have seen. Great thanks.

[@doctorbhanuprakash]

Thanks for watching

[@luna.kashyap1313]

I m feeling so relaxed now seriously thank u sir I got the much needed concept with 3d 🙏🌼

[@doctorbhanuprakash]

Thanks for watching

[@deepikarani4403]

He teaches like nursing masters guys very clear concepts for medical topics same like them good

[@doctorbhanuprakash]

Thank u so much

[@aprajeetaraj6788]

Thanq so much sir.....I was so so confused....you clear all the topic well....and make me better understand ....thnq again ....😊😊😊😊😊😊😊😊

[@doctorbhanuprakash]

Ur most welcome

[@056nikilkumarc2]

Wonderful explanation sir!!!! Thank you so much

[@thekinqom_.]

Sir your explaions are best just like dr najeedb

[@doctorbhanuprakash]

Tysm

[@prasannapadma]

Very well explained in detail, thank you Sir

[@swiftymeow8330]

What you are doing is amazing sir

[@doctorbhanuprakash]

🤝🤝🤝

[@thekinqom_.]

Best teacher on youtube😍

[@doctorbhanuprakash]

Tysm

[@vijayrajmanjeti4526]

Wonderful explanation sir, thank you so much, I'm not from medical stream but I still understood very well

[@theoryofeverything566]

Best way of teaching Energy level ❤

[@doctorbhanuprakash]

Tysm

[@dipaliharkhani664]

So easy and understandable!

[@doctorbhanuprakash]

Glad it was helpful!

[@soritube7116]

real amaizing i appreciate your work

[@doctorbhanuprakash]

Thank you so much

[@soibamnivarani7962]

wonderfully explained Sir. Thnk u so much.

[@shubhamgangawat2565]

Thank you so much dr bhanu, it was really helpful

[@doctorbhanuprakash]

Glad it was helpful!

[@emimaananth3886]

U rocked sir.... thank u very much sir... no words to describe ur work... its awesome!!

[@doctorbhanuprakash]

thank u so much

[@aishwaryashah4180]

Because of u sir anatomy and physiology is interesting

[@doctorbhanuprakash]

thank u so much

[@asim_a_m_alaraby]

GREAT DR " Bhanu Prakash" 👌👌👌💖💖💖.

[@tanvirpial]

Thank u so much. From Bangladesh

[@dr.md.atiqurrahman4802]

Sir plz make some videos on respiratory system (anatomy, physiology, pathology, diseases?

[@kangakpa]

Nicely explained sir, very precise and details,

[@doctorbhanuprakash]

Thank u

[@Mohamedyasar1234]

Amazing explanation sir. thank you sir.

[@doctorbhanuprakash]

You are most welcome

[@sowjanyasaraswathi2546]

Thank you so much sir 🙇‍♀️...

[@1TotaaS]

u r the best!!!!!!!!🙏🙏

[@doctorbhanuprakash]

tysm

[@crazygirl-ev9dv]

Super way to deliver about to SA node

[@doctorbhanuprakash]

Tysm

[@himangshusharma258]

You're the best sir 👍👍👍

[@doctorbhanuprakash]

So nice of you

[@vinodmehravinodmehravinodm9741]

Nice sir, best lecture i have ever seen...

[@doctorbhanuprakash]

thank u

[@vkook1104]

Thank you sir🙂

[@doctorbhanuprakash]

Most welcome

[@deepakkumarjatdeepakkumarj8292]

Sir you are god gift for us

[@anjanas.krishnan8763]

Nice explanation sir. Mainly, explanation regarding action potential of heart is amazing.

[@doctorbhanuprakash]

Thank u so much

[@kirtirajkashyap9026]

Thank you sir for detailed explanation. Sir, I have a doubt........during slow action potential of SA node, Ca ion influx which causes depolarisation, But how this large amount of Ca ion get back to extra cellular fluid ?

[@dr.harikrishnangopalakrish4078]

Thank you so much it’s clear now in this topic keep rocking sir

[@doctorbhanuprakash]

Thank u so much for watching ...

[@himalaydebsourav]

incredible video quality.

[@doctorbhanuprakash]

Glad you enjoyed it

[@pankajkumarpaul5015]

Excellent explanation

[@doctorbhanuprakash]

tysm

[@daibayaneekhan6908]

Great value ♥️

[@doctorbhanuprakash]

Tysm

[@376nidamuskaan2]

thanku soo much sir...its too helpful...i could never understand this..

[@sin_cos_tan_cot_sec_cosect6780]

👏👏👏great video sir!!

[@doctorbhanuprakash]

Glad you liked it!

[@mbbshub2589]

What happens to refractory period in fibrillations?

[@neelakandand1042]

hello thanks for ur vedios sir

[@drmaheklife9548]

Well explained

[@muneershakir7942]

Very helpful sir thank u❤️❤️

[@22ayushburman41]

Thanks a lot sir.... helpful 😊

[@doctorbhanuprakash]

Most welcome

[@toubarafique8898]

Amazing video sir

[@doctorbhanuprakash]

Thanks a lot

[@muhammadsarfraz3630]

very good welldone

[@doctorbhanuprakash]

Thanks for liking

[@hizbakhan6425]

Thank you so much sir ❤️ really need it

[@doctorbhanuprakash]

All the best

[@hizbakhan6425]

@@doctorbhanuprakash thanks

[@jagritmahajan6975]

Amazing lecture sirji

[@ankita2170]

Awesome sir

[@hasnainbashir9398]

Thanks and love from Pakistan 😍

[@doctorbhanuprakash]

Thank u so much

[@neethuarun2990]

Thank You Sir

[@doctorbhanuprakash]

Most welcome

[@medway6669]

Wait.... Won't it be like base of heart gets repolarised first and then the bundle at atrioventricular septum?

[@mbbshub2589]

Why SA nodal fibers are slow and myocardial fibers are fast???

[@mahashwetadas3139]

very nice...thnk u so much

[@javidkaladgi6883]

nice explanation sir super 👌👌👌👍

[@doctorbhanuprakash]

Thank u

[@AbhishekSwami_]

thanks dr. dark

[@doctorbhanuprakash]

Keep watching

[@AbhishekSwami_]

@@doctorbhanuprakash ji guru ji

[@manoharkistaiahsamaletikis7766]

Sir digoxin blocks na k atpase pump

[@mbbshub2589]

Why RMP is due to K+ in cardiac muscle??

[@Gamafoi1]

Very very very nice video

[@darkaction123]

Good job!

[@impactphysicsclasses5088]

Thanks sir

[@doctorbhanuprakash]

So nice of you

[@woopy6176]

Thank you

[@doctorbhanuprakash]

You're welcome

[@errdftyy]

Awesome lecture

[@mujtabakamal5760]

Weldon... Sir...

[@kannankamal5446]

Excellent

[@doctorbhanuprakash]

Thank u

[@Ham-os2wk]

🙏🙏🙏🙏excellent sir

[@doctorbhanuprakash]

Keep watching

[@amansaiyed8413]

Awesome video

[@doctorbhanuprakash]

Thank u

[@gure1686]

Respected sir , I want to say that sir last i had tacharcardia episode 16 july 2021 , undocumented 192 heart rate measured by oximeter , i had dizziness , palpitations these all syptoms but i had totaly awareness that time , before this episode i had diagnosed as hypochondria by psychatrist in 2018 , i prescribed medicine for six months , but i had anxiety attacks some times , before episode on that day i have cardic neurosis that i had heart attack and i took atenlol beta blocker but then suddenely this tachardia episode happened, so after that i took many psychotherapy from psychologist and my anxiety reduced but i went to cardiologist he diagnosed me AvNRT , he said to me that during panic attack or sinus tacharcardia could not exceed 160 heart rate so its definitely svt episode? So there is any possibility sinus tacharcardia to reach 192 heart rate ? My birth date 16/04/1986. After that i have never tachardia episode happen, so but you would said about this .i shall be very thankful to you if you replied me 🙏. Your sincerely Gurmeet singh

[@Studyingwithme003]

👏🏻

[@dalessioantoniomaria7693]

Great!!

[@doctorbhanuprakash]

🤝🤝🤝

[@lucifer-bq3hp]

Sir sa node n av node heart ko chalata hai( power deta hai) but sa node or av node ko enargy (power) kahain se milati.. hai

[@nomanqs8972]

Thanks sir. Thanks a lot...

[@raghadalshareef743]

Thanks

[@neelakandand1042]

sir i want to see the sa node stucture

[@haiderkaream3795]

Thanks 👏👏👏👏

[@anasak369]

good one...sir did nt mention anything about threshold in action potential?

[@doctorbhanuprakash]

threshold will be thr in sa.nodal action potential but not in cardiac muscle action potential

[@hajarmohsen5359]

Thanx from yemen sir🤗

[@mbbshub2589]

👍💯

[@doctorbhanuprakash]

🤝🤝🤝

[@nithyasree.r4896]

Sir plateau is formed due to depolarization but why it is formed? Sir

[@doctorbhanuprakash]

Late inactivating depolarizing calcium and sodium currents are balanced by activating repolarizing potassium currents to maintain the plateau, which is often down-sloping as repolarizing currents begin to dominate.

[@nithyasree.r4896]

Thank you sir

[@drsanjoydasgupta]

NICE.I HAVE SUBSCRIBED YOUR CHANNEL.NEW CHAPTERS ARE AWAITED

[@doctorbhanuprakash]

sure many gonna be added , thank u

[@litondas7646]

Nice

[@doctorbhanuprakash]

Thanks

[@mayankrawat3159]

Tnk you sir

[@meenakshisakthi5747]

Ligand gated channels... pls teach about it sir

[@journeyofmedicos]

Your video is far more interesting than lecturio video... Then why the hell, the ads of lecturio is disturbing us

[@doctorbhanuprakash]

Lecturio targeted my videos to play google ads

[@lucifer-bq3hp]

Plz explain what is the energy source of SA node..

[@MedBees]

For our body initial source is oxygen. While aerobic respiration supports normal heart activity, anaerobic respiration may provide additional energy during brief periods of oxygen deprivation. And oxygen is supplied by CORONARY ARTERIES.

[@ameerfatimarana2586]

Thanks 🇵🇰

[@HamzaKhan-nu5rw]

17:22 sa node starts

[@DrVernonMullins]

What are P cells sir ?? 😢

[@ganeshveera2166]

DHANANJAY SAHSTRABUDHE pacemaker cells

[@znsbiologyneetking]

Super 100