Structure & Function of Muscle | CSCS Chapter 1
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- čas přidán 4. 07. 2024
- CSCS Chapter Study Guides & More: / drjacobgoodin
In this video I will explain the structure and function of muscle tissue, from the whole-muscle level down to individual sarcomeres and myofilaments. We will examine actin and myosin filaments, describe the function of a motor unit, and work through the steps of the sliding filament theory.
Get certified as a CSCS (Certified Strength and Conditioning Specialist). This lecture is part of a comprehensive and ever-growing video series covering topics related to strength training and conditioning: bit.ly/3tOJp5s
Disclaimer: This video does not have any affiliation with, or any recognition, sponsorship, or endorsement by, the NSCA. CSCS® and Certified Strength and Conditioning Specialist® are registered trademarks of the National Strength and Conditioning Association.
TIME-STAMPS
00:00 - Intro
01:12 - Macrostructure & Microstructure
05:17 - Motor Unit
06:38 - T-tubules & Sarcoplasmic Reticulum
07:58 - Sliding Filament Theory
13:45 - Contraction of a Myofibril
17:03 - Recap of Phases
18:29 - Key Points
19:40 - Where to Head Next
RESOURCES MENTIONED
Haff, G. G., & Triplett, N. T. (2015). Essentials of strength training and conditioning 4th edition. Human kinetics.
amzn.to/3oGhS2W
Disclaimer: This video does not have any affiliation with, or any recognition, sponsorship, or
endorsement by, the NSCA. CSCS® and Certified Strength and Conditioning Specialist® are registered trademarks of the National Strength and Conditioning Association.
#CSCS #NSCA #DrGoodin
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Fellow strength specialists, thanks for checking out this video-it’s part of a playlist that dives into the major topics from the NSCA’s Essentials of Strength Training and Conditioning. I create these lectures for my strength and conditioning university students but hope that they bring value to you as well. More here: bit.ly/2GLzZn4
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Dr. Jacob Goodin is a professor of kinesiology at Point Loma Nazarene University (PLNU), and holds a PhD in Sport Physiology and Performance from East Tennessee State University. He has over a decade of experience as a strength and conditioning coach and sport scientist from the high school to NCAA Division I levels. In addition to his role as a professor and research mentor, Dr. Goodin directs the Athlete Monitoring Initiative at PLNU, which provides testing and monitoring services to over 200 athletes yearly as well as research opportunities for kinesiology students.
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Just passed my test, thanks for the help!
Thank you for doing these lectures, very helpful in preparedness for the CSCS!
Fun fact: The sliding filament theory/ events at the neuromuscular junction/ crossbridge cycle is my absolute FAVOURITE thing I have ever learned (so far!) in my whole undergrad career in university. It is the coolest process ever and blows my mind how I don't even think about moving my finger muscles when, for example, typing this comment, but somehow my brain knows to release an action potential in order to get to get my fingers to type. Not only that, but as I barely move my fingers to type, the crossbridge cycle is still happening probably a few hundred (?) times. So amazing that we were created to be this complex!
I agree with Liv, it is so crazy to think about how fast this complex process can happen. and we do not even realize it.
I love this you guys. I used to think I was the only one who visualized the sliding filament theory when moving my muscles. Sometimes when I'm training I get these visions of the actin and myosin just cranking away like little machines in whichever muscle group I'm working. How nerdy/cool is that?!
:)
We weren't created. We evolved to be this complex.
I really appreciate these in-depth videos! They're a good refresher and have great details!
I’m so happy that you exist on CZcams! Thanks so much for all you do
Just God bless you!! 🙌 Thanks for being on CZcams
Thanks for breaking down and clearly explaining the sliding filament theory! Also the diagram of a muscle fiber was so helpful
I appreciate that even though this was a lot of information, you explained it in such detail. The visuals helped so much!
It's great to be subscribed back to your videos Dr. Goodin. I love getting back into the basics of muscles. Bringing me back to the good ol' anatomy days. Very encouraging to build some good muscle as a new years resolution
Thorough explanation, easy to understand.
Good to be back in these videos Dr. Goodin. It is awesome to go over this on the first day, as KIN3040 was also doing this review with muscles. Thank you for the clear explanation. Everything that happens in this video executes so fast when we actually exercise or do daily activities!
I like how you gave key points at the end so that we could full comprehend your in-depth lecture! Thank you!
This video was a great review of the sliding filament as well as the actin and myosin bind.
I can't tell you how grateful and how amazing these videos are thank you very much for taking your time and placing them on CZcams
You're very welcome! Glad they are helping, mate.
This was a great video explaining the anatomy of the muscle, as well as all the details around cross bridge cycling and the sliding filament theory.
Love the way you teach 🙏🙏🙏
Always the sickest intros!! It's so cool to get a glimpse of you living out what you teach!
This was a good review of the sarcomere with the different overlapping elements that compose it. Especially with the different lines and zones.
Your content has been very helpful in passing the CSCS exam, thank you!
Thanks for the refreshment on sliding filament theory. I finally understand the whole concept.
Thanks for these videos! I'm glad you went over the sliding filament theory, I always struggle with that, so it was nice to have a refresher and a visual!!
Its a good reminder of how important our muscles are in our daily function. Even just the small things like keeping our joints together.
This video was a great review of the sliding filament mechanism for muscle contraction.
The way you explaining is realy helpful
Thank you for the video! This was a great review of sliding filaments! It has been a while since learning this topic. You went into detail about the topic which allowed me to have a better understanding of what was being discussed.
Very helpful video. Great way to start studying for the CSCS!
Thank you, Dr. Goodin, for this informative video! Learning specifically about the motor unit was so fascinating to me. It's amazing how the quadriceps contain far more muscle fibers per motor unit than the eye!
That was a great refresher from A&P with some more detail to bring it all together!
This was a great refresher of sliding filament theory. The explanation of the different bands and zones was very helpful!
Absolutely fantastic content
Its been about a year since ive been away from the Dr Goodin lecture videos, good to be back.
The siding filament mechanism is a concept that I can always use a little refreshing, especially after some time off. Enjoyed hearing all those terms again... thanks Dr. Goodin!
I really appreciate how you use images to also explain what you are talking about! As a visual learner this is something that has always been helpful to me with your videos. For example the way you explain the sliding filament ligament with images helped me gain an even better understanding of the movement!
This video was a really good refresher and did a great job of in depth description of all the structures. Thank you!
Great explanation of the sliding filament theory. In my other classes I feel like we didn’t go into as much detail as you did but now I get the full picture.
This was a great video filled with content I had previously seen and content that was new to me. I really appreciated the slides dedicated to the phases of the sliding filament theory as there are many little intricate steps and mechanisms that can be easily overlooked.
This video was a great reminder of the sliding filament theory! It is helpful to understand when our muscle is the strongest in different phases of contraction.
This was a very helpful and brief review of the sliding filament mechanism from my previous anatomy and exercise physiology class. It is nice to have this to refer back to and also to remind myself of the important key points of muscle contraction.
This is a great reinforcement of what Dr. Sawyer bis currently teaching in Exercise Physiology.
It is very helpful to talk through the concepts alongside the diagrams. It helps to visualize what is going on.
This was a great video to introduce me to all of the different parts of the muscles and help me get started with the things in this class. The diagrams actually helped me quite a lot.
This was a great summarized lesson! It is still so crazy to think that whole process is going on in us 24/7 !!
Even though I have leaned the sliding filament theory before, I always need a refresher. I always forget the lines, and bands. This was a good refresher on this topic.
Thank you for explaining the correlation between the size of a muscle and how much force it can produce while contracting, it makes so much more sense to me now.
This video helped me gain a clearer understanding of the mechanisms of muscle contraction. Thank you for the great explanation!
thanks for the resource
I have learned about the muscle system and the structure of it. Although this is the first time I've understood it fully. I think it was really helpful that you went through everything step by step and I could actually see what you were talking about and how you underlined the important parts.
This was a great refresher of the sliding-filament theory as I was in need of reviewing the bands and how they are affected during each phase.
It was nice to have the background of anatomy knowledge going into this because I already had an understanding of how the sliding filament mechanism works!
This was a great review of the sliding filament! I have not studied this since back in A&P so I need a refresher!
This was a really good review of the sliding filament and the five phases.
The phases of the sliding filament mechanism were a great refresher on the energy exchange within this system.
I think it is quite amazing to know some of the intricate details of how our muscles work to support us daily! I found the part of the lecture on the contraction of myofibrils by phases helpful in better understanding how our muscles can go from stretching to contracting.
It was very helpful the way that you broke down the 5 different phases of the sliding filament theory . I feel like i have a much better in depth understanding of the process now.
Really interesting video, loved learning about the contraction of the myofibril
Throwback to ExPhys! It was super helpful to cover physiology again as a refresher.
Your contents are realy helpful sir💚
Thank you so much for putting these concepts into an easier to understand lecture.
This video really helped to remind me how muscle tissue works, the body is so amazing!
Great video, it was a good summary of how actin and myosin bind together and their contribution to a muscle contraction
The detailed explanation of the sliding filament theory was extremely helpful in my understanding of this process.
This was a great refresher of the sliding filament theory and a good study guide for a somewhat more in depth review of a muscle cell and function. Great video.
Thanks for the recap from ex phys!
You are a weapon; cleanest delivery of information 🤾🏻
I never realized how pumped I would feel to be called a weapon. Thanks bro 💪🏽!
thanks for the video. the section on the sliding filament theory was really helpful as that is something that has always gave me some trouble
It's like Anat/Phys all over again, I took the class a couple of years ago so the refresher was appreciated!
That was a lot of information to try and put together at once, but I do really appreciate how you explained everything in pieces and then brought it together as key points. that was especially helpful when it came to the phases of the contraction of the myofibril.
This was a great review of what is exactly going on in our muscles when we exercise, but also in our daily movements! It was interested to hear that your muscles are strongest and weakest at certain points and this is because the sarcomeres literally don't have any more space to go.
I really enjoyed this video. I struggle with exercise physiology but the way you explained it made it really easy to understand!
Again awesome content and again thank you so much❤
Super helpful video. Provided a great review of hat I knew, but also provided me with some really interesting new information and fun facts!
Great review with the sliding filament theory. I wish I had these videos while learning these concepts in A&P.
This takes me back to Exercise Physiology, specifically the actin Myosin binding relating to the sliding Filament Theory!!
excellent explanation.. really helpful and very grateful for your time and effort.. 🙏🏽😃
I really appreciate this video! I found this information to be very interesting and it was a good reminder on how our muscles are working throughout the day. Most of the time we are not thinking about our muscles contracting so it was cool to learn about what goes on within the muscles without us knowing.
another thank you to you
Hi professor, I found this video to be really helpful review on muscle physiology.
Preparing to take the exam in the winter, this rushed back memories of exs phys last year. Was able to find my two notebooks and now feeling pretty confident that I still had some knowledge laying around up in the old noggin.
This was a great review video to get back into the swing of kines from break! I did not know that as you enlarge your muscles through hypertrophy you actually gain more myonuclei. How fascsinating!
very nice video thank you
This video was a great review of how we are able to determine the force production potential of different muscles, as well as how we are able to determine when a muscle has the highest and lowest force production capabilities throughout the time it lengthens and shortens.
I had already learned the three layers of muscle but never really was able to commit to memory each layer and what it contained so this video and visuals were very helpful for my understanding.
I enjoyed your explanation of hypertrophy. This is a great video of how fascinating the body is!
Great refresh on all things muscles and strength! I am really excited to have both ex phys paired with Praxis of s&c this semester!!
This was a great video explaining the sliding filament mechanism and it helped me better understand it. I struggled with this concept in my anatomy class.
Thank you Dr. Goodin for the lecture! I have watched it numerous times and taken copious notes. I find it extremely helpful for putting the pieces of the puzzle together.
You are very welcome Corey. So pumped that you're finding value from it 💪
Thanks for this insightful video, Dr. Goodin! I really enjoyed learning about the motor unit especially. I found it interesting that the motor units of the eye only have a few muscle fibers per motor unit, while for the quadriceps, it is the complete opposite -- it all depends on the required force output!
Thank u
I really like when you talked about macrostructure and microstructure, these were words I’ve never heard of before
Such a great review of our muscle structure and how we are actually able to contract them to not only perform exercise movements but also daily ones! I was interested to learn that there is a maximum amount of actin-myosin cross-bridges that can occur to execute the most optimal length to produce force. Crazy to think about how all of this plays out anytime we move!
I really liked how we learned about the muscle fibers and how they play a role for the entire body
This was a great video and was helpful in reviewing the sliding filament theory. I would struggle in understanding it when I took anatomy.
The sliding filament theory that usually is so complicated is much simpler with how you explain it. Never pictured muscle contraction as proteins sliding past each other to create it.
Thank you very much, please do more videos on CSCS if possible. Thank you.
It is still so interesting to me how the simple motion of the power stroke is what allows us to complete every muscle movement
When watching this video never have I ever thought that motor units are a massive reason to why I can contract my muscles.
Thank you
You're welcome Ajitkumar!
The reminder that each motor neuron innervates hundreds of muscle fibers was awesome! Does more muscles built through hypertrophy means more motor units available?
It is always crazy to me to learn how fast actin and myosin actually work to create action potentials in our every day movements!
The fact of more cross-bridges between actin and myosin will equate to more force production is very interesting.