Cardiac Muscle Contraction

[@kirbzzl5732]

You just saved my semester thank you so much!

[@danzatiums1424]

Thank you so much for such a great video. It was extremely helpful.

[@MandaNovokmet]

Amazing video! Thanks so much, really helped for my test

[@HaloHamster]

Wonderful clip! You're a great teacher

[@nowitsyourturn1]

Very detailed, great job!

[@brachioradialis1293]

Great lecture but Diltiazem is a non-DHP CCB @9:04

[@sarvarbhardwaj5444]

Very beautiful explanation ❣️😍

[@manish.kst5978]

It was nice lecture. Helpful

[@Supernova-217]

3:52 can someone please explain the horizontal and vertical thing? does she mean to say that in the tissue, these sarcomeres are placed after being rotated 90 degree? GREAT EXPLANATION Though

[@abdulhaq5997]

Hi great lecture! Just wondering if you can answer these questions. Does the Ca2+ that enter via the DHP play a role in binding to the troponin C to move tropomyosin? Also, is the Ryanodine receptor the same as the 'L-type voltage gated Ca2+ channel?' Thanks.

[@anatomy-physiologyforparmedics]

Hi Abdul. The primary purpose of the calcium entry from DHP is to induce the release of calcium from the channels in the sarcoplasmic reticulum. If there was an excess of calcium, the calcium is all the same, so it could also bind to troponin, but there is no way to know for sure. The Ryanodine receptor is not the same as the L-type calcium channel - the L-type calcium channel is in the T-tubule membrane, but the Ryanodine receptor belongs to the calcium channel in the sarcoplasmic reticulum membrane. Thanks for the feedback! Let me know if you have other questions.

[@abdulhaq5997]

Thank you for your answer. I actually meant, is the Dihydropyridine receptor the same as the 'L-type' voltage gated calcium channel?

[@anatomy-physiologyforparmedics]

Hi Abdul - I don't see your second question up on this feed, but you asked: is the Dihydropyridine receptor the same as the 'L-type' voltage gated calcium channel? The dihydropyridine receptor is one of the five protein subunits that makes up the L-type calcium channel. So not technically the same, but part of it.

[@qmpooler]

Am I the only one that got distracted by the music? haha, other than that very informative

[@redrose1335]

great awesome😍 may you put a link for instructure of intercalated disks🙊 and for nodal cells in cardiac system? thanx a lot❤

[@PrintSpace110]

good

[@childspecialist-dr.akumtos4383]

Very well done..

[@holy.quran97]

cardiac muscle lack T.tubule and there is no direct coupling between the plasma membrane and sarcoplasmic reticulum. . .It seems like you mix the skeletal and cardiac muscle

[@09diz]

hey, man! I think that T tubule are present in cardiac myocites too.

[@medicmike3105]

I know this comment is old, but I watched this video today. Cardiac muscle, in fact does have T-tubules, they are just smaller that skeletal muscle. SMOOTH muscle lacks T-tubules.

[@childspecialist-dr.akumtos4383]

I think it does have T-tubules.

[@farihakanwel2375]

dear you should not write contractility below this lecture.you should write the structure of myifibril.

[@ramapatra1344]

Please speak clearly not in stylist way. Because of your stylist speaking habbit all the concepts are not understood clearly