Myology - Skeletal Muscle (Sarcomere, Myosin and Actin)

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  • Опубліковано 3 січ 2025

КОМЕНТАРІ • 322

  • @armandohasudungan
    @armandohasudungan  Місяць тому +1

    📌MAKE THIS LECTURE STICK: FREE PRACTICE QUESTIONS HERE! 🎓
    youmakr.ai/test-playground/questionnaire/673d5236859b9c170836f28b

  • @amphylayola9869
    @amphylayola9869 4 роки тому +111

    I was here 4 years ago when I started vet school, here I am now watching this again as I prepare of my licensure exam.

    • @Therian183
      @Therian183 4 роки тому

      same, for RPN and now for RN

    • @muhammadali.2755
      @muhammadali.2755 4 роки тому

      It must feel nostalgic

    • @Someonebutnoone10
      @Someonebutnoone10 3 роки тому

      Here for DPT. Figure I’ll be back for the licensure exam as well

    • @brandonbardin5810
      @brandonbardin5810 3 роки тому +1

      Here now studying for a physiology exam while also working on VMCAS :')

  • @ZaraKaku01
    @ZaraKaku01 3 роки тому +11

    You are the reason m getting good grade in biology, m a veterinary doctor and currently pursuing master degree, i have read many notes from different sources but the most simplified form of understanding came from ur lecture sir. Thank you

  • @Slimshady50182
    @Slimshady50182 11 років тому +1

    Can't thank you enough for speeding up the drawing! Helps me make connections without losing my train of thought from watching someone draw a picture for 30 seconds at a time

  • @muslimsister924
    @muslimsister924 10 років тому +1

    You have just saved me from days of avoiding revising this because the text books are so confusing. Thank you so much!!!!!!!!!
    You're so brilliant at explaining with your talent!!!!

  • @courtneycook1977
    @courtneycook1977 11 років тому +3

    The calcium that binds to Troponin-C comes from the Ryanadine receptor (Ca Release Channel) which is located on the Sarcoplasmic Reticulum (Ca is stored in the Terminal Cisternae of the SR).

  • @bobbojibbs
    @bobbojibbs 8 років тому +11

    Great job explaining. Best one I've seen yet. Keep it up man you're gonna help a lot of people get A's on those Anat/Phys tests. Especially the muscular unit exam I have tomorrow morning...

    • @imrnp
      @imrnp 5 місяців тому

      what grade did u get

  • @haleyellis1093
    @haleyellis1093 10 років тому +4

    I Just want to let you know your Video has basically saved me on my anatomy final! thank you so much for putting this in "Layman's Terms" this is so wonderful and I'm so incredibly thankful!!!!!

  • @juliakercsmar6587
    @juliakercsmar6587 8 років тому +21

    you became a part of the curriculum! :D my Anatomy teacher makes us take notes of two of your videos. :D

  • @teresaswift7419
    @teresaswift7419 11 років тому +60

    I think you might have the role of ATP slightly wrong, ATP is required to release the myosin-actin cross bridge. Like rigor mortis - upon death Ca2+ flows into cells which allows the myosin-actin binding, however since there's no ATP muscles remain tense. Other than that though it was a good video.

    • @sarahmueller335
      @sarahmueller335 5 років тому +3

      Nope, you are confusing two total different situations: rigor mortise and voluntary muscle contractions.

    • @liademchenko6767
      @liademchenko6767 5 років тому +22

      She's actually correct, check any physiology textbook. In a muscle contraction it is a very very brief stage of the tight attachment, then ATP binds and myosin is able to release the actin. In rigor mortis, as there is no ATP, it remains attached, hence the rigor. @@sarahmueller335

    • @比特币摆渡人
      @比特币摆渡人 4 місяці тому

      @@sarahmueller335 She is correct, ATP is used to release myosin head from actin, not to bind

  • @Cristine401
    @Cristine401 9 років тому +4

    My teacher introduced me to your videos and I love them. Thank you so much for helping me understand anatomy better.

    • @YasOOsha
      @YasOOsha 8 років тому +2

      Cristine401 this is not anatomy lol

  • @biglosergiraffe
    @biglosergiraffe 7 років тому

    Want to thank you very much for your time and effort into not only editing and making this video, but drawing everything out and explaining it. Really do appreciate it. Personally. Thank you.

  • @aaronrodriguez110
    @aaronrodriguez110 11 років тому +4

    So looking forward to the "Sliding Filament Theory"!! Bless you,@armandohasudungan- you're an amazing human being both for your artistic style and your simplified prose. look forward to the SFT

  • @KJKP
    @KJKP 8 років тому +43

    Great video, Armando. And I'm not being sacrastic.

  • @patrickmata27
    @patrickmata27 7 років тому +1

    I know these videos are a little older, but they have been a great help to understand my A&P class better. Thank you

  • @Corntraitor
    @Corntraitor 6 місяців тому

    Wow, bravo on your skeletal muscle contraction video! We totally needed to hear about calcium binding to troponin about 47 times - because, you know, once just wouldn’t cut it for our poor, struggling brains. Your relentless repetition really hammered home the point that troponin moves tropomyosin, as if we were auditioning for a role in "Dumb and Dumber: Anatomy Edition." Maybe next time, try explaining it in Morse code or interpretive dance, just to keep it fresh. Thanks for the overkill - you truly have a gift for turning a simple concept into a marathon of monotony.

  • @Xycopixie
    @Xycopixie 11 років тому

    This is soooo helpful! My professor gave the same lecture today but you are far more clear and concise.

  • @pricilliacaldwell525
    @pricilliacaldwell525 8 років тому +2

    Shoutout to your actin and myosin drawing for these amazing videos

  • @BlinkJoe182
    @BlinkJoe182 7 років тому

    I have an anatomy exam in two days. thank you for saving my life with these videos!

  • @benparker5775
    @benparker5775 11 років тому +12

    bro you are a genius! they say if you cant explain something simply then you dont understand it enough! this goes for 90% of people teaching physiology and 90% of the you tube videos! all your videos so far have been incredible best source i have seen yet!!!! please make more of these brillant clips as i (and many others) are keen to learn! (ps can u do the sliding filament theory one b4 next thursday as i have an exam lol cheers!)

  • @rickeymohammed9123
    @rickeymohammed9123 Рік тому

    Amazing the creativity of drawing and explaining makes your work so much easier to understand. Honestly i learn more on this channel than i do in school.......and im a medical student. So thank you. P.S new subscriber :)

  • @katwill9276
    @katwill9276 9 років тому +57

    sARCOmere... its killing me
    Best videos though, thank you!

  • @booya4ah
    @booya4ah 8 років тому +3

    I am mindblown over how good this actually was! U my man, are THA bomb!

  • @abdelrahmanomara4984
    @abdelrahmanomara4984 8 років тому +79

    where is the link for sliding filament theory ??

    • @imsunny3416
      @imsunny3416 3 роки тому

      This is the sliding filament theory

  • @armandohasudungan
    @armandohasudungan  11 років тому

    Sorry bro, havent made one yet, hopefully soon

  • @danis3160
    @danis3160 11 років тому

    Wow! This video is great! What I didn't learn in an hour in class I learned in a 6:15min video. Thanks!

  • @shuante05
    @shuante05 11 років тому

    Helps a lot to actually watch it being explained than just reading it from the textbook. Thanks

  • @tahiyyakhan3189
    @tahiyyakhan3189 3 роки тому

    Thanks for wonder video. A sarcomere (Greek σάρξ sarx "flesh", μέρος meros "part") is the smallest functional unit of striated muscle tissue.

  • @hunger4jsutice
    @hunger4jsutice 11 років тому

    Great videos and combination of fantastic artwork and clear explanations. I will be using these throughout nursing school. Thank you so much for making these.

  • @jijoegal8058
    @jijoegal8058 12 років тому

    This video is soo amazing!What took me months to understand was summarized in 6 minutes!
    Thank you soo much :)

  • @msurya1004
    @msurya1004 9 років тому

    this is the most amazing way u in which can serve youngsters do better and learn better .. ! i m in love with the way u work ! thanku so much sir :)

  • @yusrahassan2363
    @yusrahassan2363 11 років тому

    thank you so much. you have no idea how clear this topic is now

  • @hiwarduski7959
    @hiwarduski7959 7 років тому

    I have never seen any one to explain in this amazing way and unforgettable. ..well done wish you success

  • @sofiamehr9768
    @sofiamehr9768 10 років тому

    Just wanted to thank you. You were my time saver during my DAT studying period. Thanks! :)

    • @Bahar1370
      @Bahar1370 10 років тому

      how did your DAT go? i have my MCAT in 4 days :(

    • @sofiamehr9768
      @sofiamehr9768 10 років тому

      I haven't done it yet! Its near!!! :(

    • @Bahar1370
      @Bahar1370 10 років тому

      .

  • @Shaggyslounge
    @Shaggyslounge 11 років тому

    Omg please tell me you have a video about how the smooth muscle works, not just the introduction to it! Eeek! You are AMAZING by the way and once I found your videos I shared them with my entire phys and anatomy class :)

  • @alanmckenzie3228
    @alanmckenzie3228 4 роки тому

    Thank you very much. Universities should give you an Honorary Doctorates Degree for your work!

  • @haider8590
    @haider8590 6 місяців тому

    I was here 6 years ago when I started Dental School and am again preparing for my licensure.

  • @karnapriya4568
    @karnapriya4568 10 років тому +11

    just a small correction idk if i am correct or not but the ATP at the end (5:13) should be ADP plus a seperated phosphate group because the muscles need ADP for the power stroke and for contracting the muscle but need ATP to relax the muscle and disassociate myosin from actin.

    • @Dbestskills
      @Dbestskills 9 років тому +4

      +Karna priya yes you're right. BTW ATP is not needed for muscle contraction, Ca is and in smooth muscle the addition of phosphate. ATP only causes the myosin to unbind from the actin aka relaxation. This is what causes rigor mortis, the lack of ATP.

    • @Dbestskills
      @Dbestskills 9 років тому +1

      +Ishwar Raghu Thanks for the troll, btw I agreed with him and gave the clarification in case anyone needed it; however maybe you've been using google translate because you did exactly what I did. Without ATP the muscle will stay contracted until the muscle fibers deteriorate. Thanks for adding nothing to this conversation

    • @Dbestskills
      @Dbestskills 9 років тому +2

      +Ishwar Raghu I said ATP only cause myosin to unbind from the actin aka relaxation. This is what cuases rigo mortis, the lack of ATP...therefore the muscle is always tight because it cannot relax no ATP. Whatever I don't care any more. As for your question, myosin after it is relaxed hydrolyzes the ATP and returns to its cocked or excited state. That means that once Ca binds to tropinin C to move tropomycin out the way mysin can bind to actin and pull. Think of it like cocking your arm back before you through a ball. Myosin bound to ADP and Pi is waiting to bind and have that power stroke or throw the ball. I hope that makes sense

    • @biologyworkout693
      @biologyworkout693 7 років тому

      thanx

  • @MK-jh7mv
    @MK-jh7mv Рік тому

    THANK YOU SO MUCH !! this made skeletal muscle physiology much easier for me .

  • @Islammagomedov
    @Islammagomedov 11 років тому +5

    Armando, thank you for these videos! It's interesting so much to see it! You are very talanted!

  • @UltraPvnk
    @UltraPvnk 11 років тому

    Thank you for existing man!

  • @barkatullah4590
    @barkatullah4590 2 роки тому

    Wonderful method and diagram
    I never saw a method like this
    Keep it up sir 💕💕💕💕💕

  • @evileye1
    @evileye1 10 років тому

    Sliding filament theory was basically explained. Calcium comes from an action potential ie. nerve conduction on to muscle. Hope that helps x

  • @meera-m7734
    @meera-m7734 3 роки тому

    Omggg thank uuu so muchh for thiss,my teacher literally explained this in 2 hours

  • @elsalarissa7563
    @elsalarissa7563 7 років тому

    if I may add, actin is a dimer. We called it "fake helix". It's not a monomer that combine together to become a double helix. It's different. You can do more research for your video about "actin formation". And you'll find out.

  • @jaidenreddy7473
    @jaidenreddy7473 9 років тому +43

    you are amazing at this way better than any of the famous stuff even better than khan academy! You should start your own thing like that

  • @becky4957
    @becky4957 8 років тому +1

    Amazing. Beautiful illustrations make the concepts very clear.

  • @emilyspooner801
    @emilyspooner801 6 років тому

    Thank goodness for Armando. !!!

  • @kevinc5086
    @kevinc5086 11 років тому

    Your videos on skeletal muscle contraction are very well done. Thanks for helping me study!

  • @karthickshanmugam5841
    @karthickshanmugam5841 5 років тому

    I love it .. please upload cardiac muscle and smooth muscle full description

  • @akhilaa2134
    @akhilaa2134 11 років тому

    nice u cleared all my confusions abt this theory .ur diagrams are so neat and clear

  • @jamesduffin3990
    @jamesduffin3990 10 років тому

    Thank you! You've made that sooo much easier than reading a text book!

  • @Crazyfor2PM
    @Crazyfor2PM 10 років тому

    I LOVE U MAN SRSLY!!! 2 HOURS OF LECTURE EXPLAINED IN 6 MINUTES!!

  • @manahilsarfraz3496
    @manahilsarfraz3496 2 роки тому

    Sir your way of explaining with diagrams is amazing 👍please Keep it up

  • @廖-h6b
    @廖-h6b 6 років тому

    Your videos are the best for understanding the details. Thank you

  • @IvyRoseLuna
    @IvyRoseLuna 5 років тому

    This makes so much sense, I am so happy I found these video’s before my exam!

  • @ashtonbrown119
    @ashtonbrown119 8 років тому

    you are wonderful, I'm so glad I came across your videos. A&P is kicking my butt!

  • @CatherineAnneMoreau
    @CatherineAnneMoreau 11 років тому

    Nice video, but unfortunately the role of ATP is stated a little differently than what research is saying at the moment. ATP is needed to RELEASE the myosin from the actin and it has to be ADP+Pi to be able to extend to bind again in the next round.

  • @NIDHIMUDIT
    @NIDHIMUDIT 11 років тому +4

    excellent explanation and awesome diagrams!

  • @cherian9679
    @cherian9679 5 років тому

    Thank you so so so much for your time and contribution for doing this excellent video for us!

  • @yazeedal-dossare2851
    @yazeedal-dossare2851 7 років тому

    OMG !!!! ,, This is the most outstanding teaching performance that I've ever witnessed in my entire Fucking life. thank you so much and you are a true hero indeed.

  • @FCA440
    @FCA440 8 років тому

    this is outstanding explanation of SLIDING FILAMENT THEORY..Amazing..

  • @zannatul23
    @zannatul23 9 років тому

    thank you, one of the best video on the net

  • @GUIDE_Nico
    @GUIDE_Nico 11 років тому

    dude, Youd made an excellent video about the parts of a muscle and the contraction of the muscle. Bro, would you make a video about the sliding filament theory soon?

  • @RedemptiveIRage
    @RedemptiveIRage 10 років тому +10

    Truly great stuff. Keep it up, man! I'm sure you've saved many students from the arduous task of learning this from a badly worded textbook ;)

  • @jjarrell1010
    @jjarrell1010 7 років тому

    Brilliant videos! You make the tough stuff much easier to tolerate.

  • @ptkid8
    @ptkid8 Рік тому

    you are the greatest man ..much love

  • @drmicheni1887
    @drmicheni1887 10 років тому

    Wow! Wonderful teaching, bro!!
    Though I've never met any UA-cam lecturer who begs for shares, and likes as much as you do. I just feel guilty not to share!
    *Shares video on Google+, Twitter, Facebook, Pinterest, WhatsApp, BBM, MySpace, Viber, TrueCaller, uTorrent, etc. hehe!*

    • @beingfor1825
      @beingfor1825 10 років тому +2

      Please, if you cannot appreciate somebody's effort at least do not criticize it. he might have an intention of reaching to those students who are struggling to understand these topics but do not know about it. very few people can explain things they way he does. Come out of the closet of stereotyping, please.

  • @ΑλεξάνδραΠιπέρου
    @ΑλεξάνδραΠιπέρου 4 роки тому

    Congratulations!!!Your amazing explanation helped me a lot .

  • @gustavoadolfocardozo96
    @gustavoadolfocardozo96 11 років тому +1

    dude this is very helpful! I've seen this video 3 times.
    Thanks a lot

  • @kimkeeley6156
    @kimkeeley6156 10 років тому +2

    Hi. Great video. I cannot find your sliding filament theory video. Can you please direct me to it? Thank you in advance.

  • @IkechukwuIheanacho143
    @IkechukwuIheanacho143 9 років тому

    Excellent video and straight to the point

  • @mahmoudobeidat4741
    @mahmoudobeidat4741 9 років тому

    thanks, you always make things so easy to understand

  • @zannatul23
    @zannatul23 9 років тому

    honestly i have to comment again, the video is excellent
    thank you g

  • @WhyIGorroBeAnonymous
    @WhyIGorroBeAnonymous 11 років тому

    Your drawings are so good!

  • @SushiBabieL4D
    @SushiBabieL4D 11 років тому

    You're so awesome!! thanks for sharing! It was a great idea to draw it out and explain it. I was able to understand it.

  • @DamZFXBeats
    @DamZFXBeats 10 років тому

    just for you guys to know, i think the atp binding site of myosin is the same as the nucleotide binding site, since my textbook calls it that!

    • @uncleladdi
      @uncleladdi 10 років тому

      ATP is a nucleotide. it;s generic name is nicleotide.

  • @Holubiac
    @Holubiac 8 років тому

    GREAT!!!!!!! Keep doing that, because you are doing an extraordinary job!

  • @andreavargas7474
    @andreavargas7474 7 років тому

    Very helpful. Thank you! Studying for my PT Recert and NASM doesn't quite go into depth like this.

  • @alicee171
    @alicee171 11 років тому

    wow, i have never heard a better explanation of this process. thank you!

  • @erinstephens5135
    @erinstephens5135 4 роки тому

    You're amazing! I love your lectures. thank you!!!

  • @melvinpeters807
    @melvinpeters807 Рік тому

    Excellent video!

  • @floydp2703
    @floydp2703 11 років тому

    Wish there was a download link for this one too. truly awesome videos thank you

  • @MsCowsiecow123
    @MsCowsiecow123 11 років тому

    DANG IT :( Studying for my finals and your videos were helping so much and one on the sliding filament theory would have been so amazing! But thank you. You're so great at explaining.

  • @farismoinudheen1477
    @farismoinudheen1477 6 років тому

    Amazing work bro ... Keep it coming ❤️

  • @adamwright7887
    @adamwright7887 9 років тому

    such a clear and well explained video. extremely helpful.

  • @ojashvi6226
    @ojashvi6226 7 років тому

    Oh my god !!
    Your drawing skills are dope
    Thankyou sir☺

  • @Cosine_Wave
    @Cosine_Wave 11 років тому

    There's an annotation at the start regarding that.

  • @Loniburger
    @Loniburger 11 років тому

    You are my favorite teacher!

  • @wantianteng4104
    @wantianteng4104 11 років тому

    Where is the sliding filament theory? Ur video is great btw!

  • @futoonbinsaleh2220
    @futoonbinsaleh2220 9 років тому

    your videos are helping me a lot!!! thank you thank you thank you !!

  • @HighHell99
    @HighHell99 7 років тому

    Extremely helpful. Well done! 👍

  • @priyankalolage277
    @priyankalolage277 5 років тому

    You are so incredible with the knowledge u explain with art 💞

  • @ShoroukA
    @ShoroukA 9 років тому

    THANK YOU!

  • @shadyxx92
    @shadyxx92 11 років тому

    really nice work there!

  • @sakiaakbar791
    @sakiaakbar791 5 років тому

    You are doing good job sir...thak u so much..love from kashmir

  • @anotherman3308
    @anotherman3308 4 роки тому

    Great job pal

  • @omarikhlef9152
    @omarikhlef9152 5 років тому

    So useful thanks Armando

  • @jdoedelyewing6711
    @jdoedelyewing6711 9 років тому

    very good video and well explained,

  • @طبعام-ذ6ف
    @طبعام-ذ6ف 2 роки тому +1

    Where is the filament theory