Absolute and Relative Refractory period in cardiac muscle | Cardiovascular Physiology mbbs 1st year

Physiology lecture on cardiovascular system physiology explains Absolute and relative refractory period.
Cause of Absolute refractory period
From phase 0 to half of phase 3 of cardiac action potential is absolute refractory period. It occurs because sodium channels are in inactivated state during this time.

Cause of relative refractory period
After half of phase 3 to RMP is relative refractory period. It occurs because some channels have chanaged their state to closed state so few channels are available which can open.

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[hatakekaya]

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[ShameenFerdinando]

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[aisharasool]

I loved the fact how you clarified difference between closed and inactivated state ....Thank you so much God give you success in every walk of lyf...once again thank you mam ..

[jayeshdudhe]

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[NAP-ye]

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[dr.j]

im glad to watch this video. you beautifully clarified the main point that it is actually the number of sodium channels in inactive state and closed state which differenciates the absolute and relative refractory period

[ericm]

Really appreciated the details on closed vs inactive states of Na channels. I have had a very clear understanding of ARP vs RRP but never knew it came down to inactive vs closed. Thanks for the clarification and clear explanation!

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[sohelgazi]

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[dr.j]

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[arvindhkumar]

For the first time, I understood the concept mam❤, Thank you soo much:)

[astharajput]

finally my concept get cleared.... was so confused about ARP and RRP.
thank you Mam 🙂

[aroongaroong]

Thank you very much for your clean explanation on the refractory periods. Let me share your video with my students. They will appreciate your explanations too!

[nouraalhajrie]

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I am having my CVS end of module exam next month and I really needed this kind of explanation😍
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[johnkodhek]

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[MoinAhamed-vx]

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[rahulfromkerala]

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[shark]

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[aninditahapsari]

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