Musculoskeletal System | Muscle Mechanics | Twitch, Summation, & Tetanus
ฝัง
- เผยแพร่เมื่อ 20 มิ.ย. 2017
- Official Ninja Nerd Website: ninjanerd.org
Ninja Nerds!
In this lecture Professor Zach Murphy will be teaching you about Twitch, Summation, and Tetanus. During this lecture we will be discussing the phases of the muscle twitch, the difference between isometric and isotonic contractions, along with their graphical representations. We hope you enjoy this lecture and be sure to support us below!
Join this channel to get access to perks:
/ @ninjanerdofficial
APPAREL |
www.amazon.com/s?k=ninja+nerd...
DONATE
PATREON | / ninjanerdscience
PAYPAL | www.paypal.com/paypalme/ninja...
SOCIAL MEDIA
FACEBOOK | / ninjanerdlectures
INSTAGRAM | / ninjanerdlectures
TWITTER | / ninjanerdsci
@NinjaNerdSci
DISCORD | / discord
#ninjanerd #MuscleMechanics #Musculoskeletal
God bless you house, your cow, you car, your wife, your brain and everything that concerns you... you a life saver
to me too
"Your cow"
@@sinister2423 means the world if you're an indian hindu 😂
cow🤣🤣🤣🤣that he sure will get it🤣🤣🤣
😂 lol it’s the cow for me
Don't mind me.
0:22 muscle fiber types(other videos)
0:38 [Video main topic] Graded muscle responses (2 main types of stimuli)
1:03 Resting membrane potential/Threshold potential(muscle cell)
1:08 Graded Response depends on Frequency and Strength of [Neural Stimuli]-primary(Somatic) stimulus for skeletal muscle fibers
2:05 Muscle Twitch relates to Motor Unit
2:23 Twitch=Rapid muscle contraction(response) from one neural stimulus
3:10 Motor Unit= motor neuron + muscles fibers (sup by motor neuron)
3:47 Recap
4:38 Structure of skeletal muscle
5:15 3 phases of muscle twitch
1)Latent
2)Contraction
3)Relaxation
10:21-contraction(cool)
11:05 Max Voltage-end of contraction(peak?) activates gates, opens channels for potassium ions to leave cell
11:57 (Relaxation) Tension decreases- reverse slide?
12:46 Recap muscle twitch
17:32 Easy on that sodium ion influx, they say the sarcoplasmic reticulum calcium release really stings when it gets in your 👀.
Later mania.
What up depression.
thank you so so much
saved me so much time, thank you! way to put your neurosis to good use... I should probably do the same haha
I just wanted to tell you, you are awesome! So glad I found this channel!!!
This is my first comment ever on social media but I had to comment on how great of a teacher you are. We need more teachers like you, who care about the education of others. Your videos have truly helped me in desperate times during my A&P class! THANK YOU!!!
I have met only few people in my long journey with science who can explain like you sir 👍🏽👍🏽 keep going
Ninja Nerd is straight up the only reason I got through my first-year of vet school. You're changing lives for the better guys!
Genius. A born teacher; an educator par excellence.
You are my favorite TH-cam instructor. No one explains things so simply as you do.
Damn... this is gold I found, gold I say!!
+vallc16 lol!!! I'm glad you enjoyed it!!
omg thank you so much!!! i can't believe some one caring this much to inform people .appreciate
Really I can imagine how nice ur teachers taught u
Really u r so blessed
And thanks for helping many students
Stay blessed
I can never thank you enough for your videos please never stop making videos you are one of the most amazing teacher on youtube
You're explaining right from your heart, thank you so much
I'm so in love with this channel now fr this was my first time on the channel and learnt a lot thanks blud
Hi, i´m glad you take your time to make these videos, I really apreciate your effort . You're my inspiration. Thanks,keep doing videos please !
you are a life savior. keep up the good work
This guy is so much dedicated to teach us and he is far away from the glamour world in which people focus on dressing well themselves he is in torn t shirt but teaching like an incomparable person🙌🙌 thank you sir 😇😇
i will never tire of saying that you are the best teacher and this is the most amazing channel ever!!!!!!!!
holy shit, talk about being able to simplify this and get the science across!!!!!! this is worth more than gold
THIS IS AMAZING THANKYOU SO MUCH FOR THE EFFORT ❤️
Really , Sir this is amazing lecture I 'ever found thankyou Sir for wonderful explanation . Love From India May god bless you ..
Great. Thanks for the informative presentation.
You make medicine easy. Thank you so much!
Thank you sm for your videos! ❤️ I don’t normally comment but seriously thankful for you making this a little easier to learn!
i am so appreciated from your teaching!
You are SAVING my life. 🙏🏼
Ninja Nerd you are gem❤, watching from India,Your way of teaching is just awesome and every single word you explained is now fixed in my mind.
Thank you so much sir.
For sure you are a good teacher, I really appreciate you, and the way you are teaching, thank you much . May God bless you
Never met anyone this smart. Not even my lecturers can contend. No cap...thank you very much
Amazing teaching man! It really makes it easier to understand and grasp the concepts. Love it
Hi, one correction I would like to note is that the example given in the video is spatial summation since multiple neurons were used for stimulation. Temporal summation would be used in the case of one frequently firing neuron. Other than that, thank you so much for this video, these are amazing resources!
Indeed, finally someone who comments about it.
Yes! I hope that Ninja Nerds will correct this in their next video. Each muscle fiber is innervated by ONE motor neuron, and only one. Therefor, summation depends on temporal summation, not spatial.
No man, it is Temporo-Spatial or the mixed one.
Great knowledgeable video, thanks a ton!!!
This helps so much--Thank you!
OMG! It's way beyond amazing!
Thanks so much,,,so so informative and understandable 🙏🤍
Great explaination! God bless you
THIS SAVED MY LIFE
Absolutely PERFECT explanation!!! Flawless presentation! Thank you so much for making this video!
As some other comments pointed out, there is a mistake in the explanation of summation and tetanus. The skeletal muscle AP is only a few ms long, whereas the mechanical response starts with a roughly 5-10 ms delay, and finishes around 100 ms after the AP. Therefore, the sarcolemma is already repolarized even before the contraction phase of a twitch starts!
Summation, incomplete and complete tetanus happens when APs on the sarcolemma are generated in a rapid succession. Under these circumstances, calcium ions are not entirely taken back to the SR before the next "package" of calcium ions are added to the sarcoplasm. So the calcium concentration is already higher than the resting level, and with the newly released calcium, it will reach an even higher peak concentration. Depending on how quick the release events happen and for how long time, it can lead to summation (the muscle does not reach maximal tension), incomplete tetanus (maximal tension is reached at the peak of contractions, but relaxation is still visible), or complete tetanus (no relaxation between the peaks).
You
Are
A
Wonderful
Teacher.
Thank
You
LEGEND ❤️❤️
Just EXCELLENT!
Eloquent and excellent
you really saved my life thanks
U are the best. Well explained. Thanks for this.
+Ugonwa monet Okoro You are so nice! Thank you!
This is so helpful omg
Magically wonderful
You are the masterpiece!!
Phenomenal lecture 👌 👏 🙌 Thank you so much ❤
Thank u so much for ur effort sir u r amazing and the best teacher I have ever known .I am presently in my first year mbbs ur videos help me a lot sir.keep rocking sir...... 👍
Great lesson, thanks!
+Samantha Rossi So happy we were able to help!!!
great detailed explanation
Very helpful, thank you sir
This was much more understandable than my prof and books combined. 👌🏻 thank you so much!
awesome as always, thank you
Amazing! Thank you!
thank you, your video help me to understand this topic, i will take the exam soon
where have you been all my life? THANK YOU SO MUCH
this man has a natural God given talent
Very well explained sir, thank you. deserves a big like :)
WOW! I haven't met anyone who can explain science the way you explained and you are explaining from your heart and very easy to understand. Thank you!
your videos blow my mind, thank you!!!!!!!!!!x100000000
Your videos are amazing !!!!!!
Wow, thank you so much!
Thank you, you are an Amazing teacher. I aspire to be like you in future!
Thank you doc 💓
Thank you so much sir I really wish you achieve everything you ever wished for thank you sir once again
OMG thank you for this! You are a lifesaver!!!
+Aubrey Banguis awesome!!! I'm so happy that we were able to help you thank you for the positive feedback!
You are so awesome! Thank you for making this amazing videos. Better than my professors.
Thank you very much.
Thanks for this obvious illustration
This was so helpful! I can't thank you enough!
Beautifully explained, thank you so much.
+Brooke Murray Thanks! Continue to spread word about this channel 👍
that's amazing!!.. thank you so much ^-^
Guys believe me u need no Textbooks when u have Ninja Notes ,,,Cover almost all Guyton and Hall Love u Sir
Resting membrane potential -90mv 3:48
Threshold -55
Peak potential +30mv 10:50
Load & resistance 18:38
You are one of those spoon feeding Teachers!! Thank you much, Science got easier because of you.
Thank u, thank u, thank u so much sir. Love from India. Don't know which country you belong to but you explained very nicely.
thank you. big help
thanks so muchhhh for this video! really helped me for uni to understnand smooth and incomplete tetanus :)))
I can’t thank you enough for the push you have given me through these tutorials. I get time to recap everything before my exams.
Good luck on the exams! -TG
Thanks for your kindness and services!! ✨✨
Thanks for your kindness and services!! ✨✨
Thanks for your kindness and services!! ✨✨
Thanks for your kindness and services!! ✨✨
Actually ... U're my hero sir following u from Algeria 🇩🇿
you videos helps me alot ,making studies easier...thank you
Amazing thank you
You are awesome!
So helpful
Thank you. I should have watch your video. I wasted my whole day try to understand this stuffs.
Ur a damn good teacher bro
Thank you!!!
Amazing 🌸✨
Thank you so much, you are definitely a G.
Your the best. Couldn't ask for more!!!
Great source for learning..looking forward for lecture on Adaptation to anaerobic and aerobic training programs
Dis guy is the bestest
man is carrying me through A&P
THE GREATEST
you are the best
Amazing video, became easy to understand everything.. thanks for sharing :)
BLESS YOU
Nice video but you may wish to review example of two distinct neurons stimulating same fiber - phyisologically any muscle fiber type can only be stimulated by one and only one motor unit that is dedicated to the target muscle from the homogenous motor neuron pool whereas one axon within the MU would deliver the action potential to its associated muscle fiber
No words sir 🙏🏼🙏🏼❤️🇮🇳🇮🇳
Thank you for this!
+Debbie R. Thanks for watching! Make sure to spread the word about this channel 👍