Trunk & Spinal Column Anatomy: Muscle Actions

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The muscles of the trunk stabilize the spine, transmit force between the upper/lower body, and enable forced inspiration and expiration. This lecture is part of a free, 25-video series covering every facet of structural anatomy. Don’t just memorize human anatomy, master it: bit.ly/32kJ5zw
TIME-STAMPS
00:00 - Intro
00:21 - Muscles that Move the Head
04:34 - Sternocleidomastoid
05:52 - Splenius Muscles
06:26 - Muscles of the Vertebral Column
08:33 - Muscles of the Thorax
10:06 - Erector Spinae Group
12:40 - Quadratus Lumborum
12:50 - Muscles of the Abdominal Wall
16:07 - Rectus Abdominis
16:26 - External Oblique
17:44 - Internal Oblique
18:46 - Transverse Abdominis
19:16 - Where to Head Next
RESOURCES MENTIONED
Floyd, R. T., & Thompson, Clem. (2017). Manual of Structural Kinesiology (20th Edition). McGraw Hill.
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#anatomy #spinalcolumn #DrGoodin
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Whether you are a student or practitioner of human movement, or just need to brush up on your stats-thanks for checking out this video! It’s part of a playlist that covers introductory statistical concepts: from central tendency to ANOVA, all in the context of kinesiology and sport science. You can find that here: bit.ly/2GOtjVf
Additionally, check out my Praxis of Strength Training and Conditioning playlist where I cover major topics related to becoming a Certified Strength and Conditioning Specialist (CSCS): bit.ly/2GLzZn4
Or stop by my channel for complete teaching series on anatomy, kinesiology concepts, and sport science: bit.ly/2Rlg5kQ
Have a great day and remember to move well, live well, and teach others to do the same!
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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.
APPLY TO STUDY UNDER DR. GOODIN:
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MUSIC CREDIT
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22 июл 2024

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Комментарии : 249

@anniemusgrave3089 3 года назад

Wow! This video was super helpful. I took anatomy last year and I thought that class went into the muscles in depth! There are so many deep muscles that are so important that I had no idea about. I was shocked to learn that there are so many muscles solely for breathing purposes as well as surprised to find out that most only get engaged when higher breathing rates are required during exercise. It makes me wonder what happens to those muscles in individuals who never workout and therefore never utilize those!

@DrJacobGoodin 3 года назад

They atrophy! Funny story: (maybe I said this in the lecture? I forget...) anyways the first track meet of each season I was always the MOST sore in my chest and ribs the next day. More-so than in any of my hip or leg muscles. It wasn't until I learned about forced expiration musculature that I figured out that it was my muscles of forced expiration. They were challenged often in training, but a full day of racing really taxed them.

@emilyannhively 6 месяцев назад

I like the fact that you include pictures of all the muscles so I can visually see what you are talking about

@ReaganCole-mk3jr 6 месяцев назад

This video is really helpful to understand the muscle actions. Having pictures and drawing for the muscles allows for greater understanding.

@tonymarr5979 10 месяцев назад

Most RU-vid videos or teachers don't take the time to go as in-depth as you did. This video really helped me understand it!

@Chasebowen23 6 месяцев назад

Putting this whole lesson together with the movement names and the muscles associated with that movement was great

@cjbuenviaje 2 года назад

The imagery used to explain the position of our muscles and the alignment with other muscle groups helped out a lot. Especially when thinking about lifting weights, I think it is important to know the kinetic chain.

@noahcuellar6574 3 года назад

Thank you for clarifying ipsilateral, contralateral, and unilateral. I can't wait to talk about muscle actions using them!

@DrJacobGoodin 3 года назад

You'll sound both nerdy and learned while doing so-win-win!

@baileywilliams2821 Год назад

I really liked how in-depth the video was talking about many of the smaller muscles that don't get mentioned in anatomy in physiology courses.

@makennakaczmarczyk7563 Год назад

This video really improved my understanding of the muscles included. I now am able to find them better on myself after hearing it explained in full detail, and learn more information than I knew before!

@Moniiiqueee824 10 месяцев назад

The trunk and spinal column seem so complex but the anatomy and the way Dr.Goodin explained everything made so much sense. Anatomy is one of my favorite subjects when it comes to school.

@JulissanJuarez 6 месяцев назад

This video was great. My favorite thing about your content is how everything is short, sweet, and straight to the point. Going over the small details really helps and it is so interesting to learn.

@noelledarquea2060 6 месяцев назад

One of the main things that I enjoy about your videos are that the content on the slides are very short and concise yet extremely informal. I did not know much about the diaphragm before this video and you explained it very clearly and helped me look further into the details about it and the anatomy behind it. I also learned about the thoracic volume during this which I didn't even know existed before this video.

@jamarmack9626 3 года назад

The muscles of the abdominal wall were my favorite to learn about because of how much they do to keep our bodies positioned correctly

@madelinehernandez8838 Год назад

It is a lot easier when you use your own body to try and find specific muscles versus a picture on the internet or in a textbook. Thank you for making everything so easy to understand in your videos.

@chrismangram8463 2 года назад

I really enjoy you having us perform certain movements to ingrain it into our memories.

@PLNUstephaniekhin 6 месяцев назад

I really like how well put these videos are along with providing images and specifying what is being talked about.

@devanney1863 10 месяцев назад

The amount of muscles present in the trunk and spinal column is astonishing. It is also fascinating how each contribute to different movements.

@KaitlynJungers 10 месяцев назад

I appreciate how in-depth this video was in describing different muscles. The images used in this video as well as the description helped me understand the anatomy and muscles discussed.

@celinegriffin3244 Год назад

I like how you showed pictures and pointed out the muscles, especially the description it's broken down and it'll be helpful when having to palpate on my own body.

@evakoutelieris9550 Год назад

This video does a really good job of breaking down everything and helps get a full understanding of what is happening in the muscles

@hannahchacon9621 Год назад

Finding the muscles taught in this lecture on myself made it way easier to learn. Putting the muscles into certain groups also helped me differentiate them.

@jessiesophie 2 года назад

I thought the detail that went into pointing out the different sides for the muscles and how certain muscles relate to different movements extremely helpful.

@calebussery5319 Год назад

The drawing of some of the attatchment points and the directionality of the muscles in the video was super helpful for learning.

@jakegonzales1367 2 года назад

This was a great anatomy and physiology recap, I also learned more muscles that I did not know existed like the quadratus lumborum.

@jonathanrobyn2450 3 года назад

This always amazes me the way the muscles of the spine and abs work together! thanks Dr. Goodin

@Heriberto-pj7bt 6 месяцев назад

Honestly, these videos are easily digestible and cover anatomy far better than when I took it. I guess that may be due to the fact that this course deals in more specifics over mere terms.

@allcatnofish 3 года назад

The example of the bucket filled with water when referring to lateral pelvic rotation of the Quadratus Lumborum was extremely helpful!

@alexissoncrant130 2 года назад

I really appreciate the examples you use in showing how each muscle leads to different movements.

@kieranmccarty4050 Год назад

The way these videos are put together is absolutely great. I find it really helpful to grasp the anatomy and muscles being described when there are pictures next to each description.

@natalievandell7402 Год назад

I always enjoy taking anatomy-related classes because there's always something new I learn about the body every time. It's crazy how our bodies are designed to keep us alive no matter what we're doing. E.g. having muscles that are designed to help us breathe.

@willhopkins4197 2 года назад

Palpating the muscles on my own body is something I have always done. Glad you shared that tip with students that may find that helpful!

@ameliabrock 6 месяцев назад

I've been palpating some of my friends (with consent!) and it's so cool to be able to feel the small differences in everyone's anatomy! The hands on learning aspect of having a body to palpate is super helpful :)

@clairemasterson6031 2 года назад

Honestly finding the muscles on my own body while following along with the video is extremely helpful!

@nicolelewis3329 2 года назад

The way in which this video was formatted allowed for me to recall previous knowledge from anatomy and build off it with the introduction of muscles that I may have not heard of yet. It helps me to stay organized and connect muscle regions together!

@graceh223 Год назад

I appreciate the diagrams of the muscles. It makes it easier for me to memorize the information.

@timnoveda4004 2 года назад

Highlighting over the muscle while talking about it made it easier for me to visualize the location.

@lilyrunge1680 10 месяцев назад

Lots of details which are helpful! Breakdown of the individual muscles helped in understanding how they work together and what movements are performed.

@tsalazar0020 2 года назад

I liked how you broke down each muscle and went into detail in this video. Palpating these muscles on myself has been very helpful as well.

@henrydare Год назад

The scalene muscles are incredible! They are so strong. The fact that they are able to support our neck and head as a whole is mind-blowing. I get a lot of pain between C7 and L1. It's very painful, so I know from experience that we have to be careful and make sure we protect our "neck health" at all costs.

@isabellarondon235 10 месяцев назад

I think it’s so interesting to understand what each muscle does to help develop movement. I think it’s helpful to have illustrations because it gives a clear picture of where each muscle is located.

@vanessaviramontesPLNU 10 месяцев назад

Dr.Goodin, The anatomy break down in this video is amazing. Something I learned in this video was the deeper muscles that lay deep in the spinal column. For example, the numerous muscles from the cranium down to the pelvic girdle work together to support our spine. Just like many of my peers in the comment section, I did not learn a handful of the deeper muscles discussed in this video in my previous anatomy class. It is exciting to learn new things and I am sure that in class my education will only get stronger. After this video I am excited to read the chapter and getting the chance to palpate!

@hannahkefalas9995 3 года назад

Definitely lots of good information here that I'll need to go over a few times.

@HBchun 3 года назад

It's amazing to me that all these muscles in the body are working constantly unconsciously to allow me to move in the ways I want. Definitely need to practice locating these muscles on my own body to master where they are and their specific actions!

@DrJacobGoodin 3 года назад

I know right? And yes locating them on yourself is one of the best study tools.

@chynnakifer1218 2 года назад

I like how you make the videos interactive! It helps me gain a better understanding whether it be on where they or located or how they work.

@KelseyWilliams-vr8kn 6 месяцев назад

Going over the images with the pen strokes to demonstrate movement and the direction of contraction is really helpful, especially when it comes to contraction of the external and internal obliques.

@oliviashaw3148 Год назад

It was really helpful that you described some of the muscle functions by telling us how to adjust our bodies in that motion.

@aaronrodriguez1590 2 года назад

I really enjoyed how detailed you are with every muscle you are going over rather than just leaving the image up and moving on. It really helps me understand where the origins of the muscle are and how the name of each muscle gives us context clues of where it is located.

@wyattsimms4472 2 года назад

It definitely helps to walk through the movements by actually doing them. I also learned what the terms contralateral and ipsilateral mean.

@macynunez4455 Год назад

Crazy interesting how each muscle in our body has specific and purposeful functions and also work together with other muscles to carry out many different movements. I appreciate the detailed visuals that help provide an understanding of where they are located and why they perform the action they execute.

@iNoRiJoY13 3 года назад

So crazy to me how many muscles are involved in our every day movements, thank you for the visuals!

@aribhalla9820 3 года назад

Whenever I watch these video lectures I always seem to palpate on myself and it's super helpful when trying to learn/memorize certain structures!

@DrJacobGoodin 3 года назад

Yes, that's the key Ari!

@caleighgarcia7792 2 года назад

I really liked the analogy of putting hands into a sweatshirt pocket to explain the obliques. That made it easy to envision and remember the angle of the muscles.

@coreycollier2063 3 года назад

I enjoyed how all of this was well put together and built nicely upon some knowledge from anatomy/physiology!

@DrJacobGoodin 3 года назад

Thanks Corey, glad some of it is review for you

@user-fj4of3pi1l 10 месяцев назад

I appreciate all the detailed information about the muscles throughout the head and neck, because there are so many even more movements. The detail continues down through the trunk. I loved learning about the quadratus lumborum muscle and all the movements of rotation and flexion on the ipsilateral side.

@VirAquinoPLNU 10 месяцев назад

This s a very in depth lecture on the trunk muscles. I didn’t realize how much there is and how many is used during certain movements. Definitely have a lot of studying to do

@aliciahernandez00233 10 месяцев назад

Prior to watching this video lecture I did not realize how many muscles were involved just to simply move our head. It takes all the posterior muscles of neck to just make a simple movement. It is so cool how our muscles work together to move our bodies.

@brandonkotlarczyk 10 месяцев назад

It is nice to see an in-depth explanation of physiological aspect of some anatomical figures. For example, being refreshed on more specific muscles is important, such as the sternocleidomastoid providing lateral rotation and extension of the head

@BrianaReynoso 6 месяцев назад

Through the video I learned how much goes into our daily "simple" movements! I enjoyed how everything was broken down, it really helped me understand each muscle and all their unique functions.

@alannabergherm8046 2 года назад

I really liked how your drew out the muscles on the diagrams so we could see it clearly! It definitely helped me learn the location of the muscles better.

@miadenava585 10 месяцев назад

Thank you for going through each of the muscles and explaining/describing how they work in detail. This video was really informative and helpful.

@Justin-bo4cx 2 года назад

I've always had certain moments in my training that I tweak the back of my lower cervical/ upper thoracic. I think this video helped me understand that the muscle that I was straining was my splenius muscles.

@sofiawallauch1078 Год назад

I really liked how each muscle had a corresponding diagram where you would draw on the exact muscle that was being discussed. This really helped me visualize the muscles. In addition, when discussing the quadratus lumborum muscle, the diagram of the bucket of water representing the pelvis during lateral pelvic rotation helped me see which way the pelvis rotates.

@emilymerkes8707 10 месяцев назад

I agree! It was nice because I could use the notes and download them to my IPad where I took notes right on the diagrams!

@faithsanchez7000 3 года назад

the sternocleidomastoid is my favorite muscle! It's just so fun to say

@DrJacobGoodin 3 года назад

Agreed

@georgevidaurre7083 3 года назад

Honestly I never forget that one!

@dylanjames8927 Год назад

I enjoyed seeing the complexity of the muscles and their actions when they were shown from different angles and different views.

@zanedirenzo5820 Год назад

It was helpful that you broke down all of the names of the muscles for us

@birileon3559 Год назад

Really found this video as a basis for truly understanding how the entire skeletal muscle system works! The spine is fascinating both biochemically and functionally as well. Without the stability of the spine, the trunk would not be able to function properly.

@JamesAdams-fu2lp Год назад

It was really cool to see how the oblique angle of the sternocleidomastoid plays such a key role in its versatility of movement about the neck and head. It's also interesting to see how many compound movements that the deeper muscles of the trunk can have on the body.

@jessedemuth4289 Год назад

I really appreciated how much detail went into this video. It will definitely be helpful to practice going through these motions while palpating to study.

@audreyoates3242 2 года назад

I really loved the imagery you used. Emphasizing the areas you are talking about by drawing around the obliques etc. helps so much!

@matthewdato 10 месяцев назад

Great job on going in-depth on each of the muscle groups! It was definitely a lot of information and I forgot how much info there was, however it was organized and it made it easier to follow along.

@nathanshoup7132 Год назад

The Sternocleidomastoid helps us with our neck flexion laterally. This muscle is essential in moving our head, a big and strong muscle. The serrated posterior is named that because of the way that it looks like a serrated knife. The Diaphram is essential in respiration. Great video, and very informative.

@anthonymartinez8962 2 года назад

I really enjoyed learning about the muscles/movements of the trunk and spinal column, the way you gave examples and showed the results of each muscle action in a way we could imagine helped immensely!

@maggiewolf5692 Год назад

I appreciate the instruction on finding muscles on myself or someone else, and how it will help advance our kinesthetic knowledge

@LukeMoore-cx4iz 6 месяцев назад

It was very interesting to see all the the muscles and how they work together as we move around. It was very cool see how something as small as breathing involves so many different muscles.

@emmasanchez5975 3 года назад

Being able to palpate on my own body or my sister and actually knowing what I am doing is really helpful. This video really helps me to do that, thank you.

@DrJacobGoodin 3 года назад

As long as your sister is cool with it!

@hannahlien5137 Год назад

I really appreciated the explanation of the muscles and their actions. Finding the muscles on myself (when possible) and carrying out the movements helped a lot to grasp the actions of each muscle.

@joshcombs123 Год назад

What stuck out to me in this video is the complexity in the neck muscles. it is super interesting how they all work together for daily movements, but also how they contribute to other movements and exercises.

@aleucht 6 месяцев назад

This video helped me be much more precise to describe when my neck hurts from sitting all day

@Knepperpepper33 3 года назад

I really enjoy these videos. I might have to watch them a couple of times because the attain so much great information but it is well explained in the videos.

@DrJacobGoodin 3 года назад

I'm glad they're helpful Marissa!

@hannahb872 Год назад

I thought it was fascinating to learn more about the muscles associated with turning the head, a simple daily movement that takes so much coordination from multiple muscles!

@gabbyschroeter8915 Год назад

I thought this video was extremely helpful!! I really appreciated the visual comparison of the pelvis being like a bucket of water. Understanding that the direction the bucket rotates is the direction the water spills (lateral pelvic rotation to the contra-lateral side) made understanding how the pelvis and trunk muscles function a lot more clear!

@Adam.gates_ 2 года назад

The actions of the internal and external obliques have always confused me, but this video cleared it all up!

@ilsechavez 2 года назад

I really liked how you drew over the muscles with your red pen when mentioning them, it is hard to distinguish them sometimes.

@caitlindonaldson3681 2 года назад

I really enjoyed the breakdown in this video and how you cover and explain each of the muscles. It really helps me understand and makes it easier to learn!

@kaileyaraki1180 Год назад

Loved the video! I think the most interesting point throughout this lecture was learning the ipsilateral rotations caused by the abdominal muscles.

@dianalira6870 Год назад

It is really helpful to palpate your own body before palpating someone else. This is helpful so you have a better sense of what to feel for before doing it on someone else. There are so many muscles, so this is a great overview.

@joyshang5670 Год назад

I really liked how the muscles are integrated with what they are involved with. For example how certain muscles like the diaphragm are involved in breathing.

@everoche3754 Год назад

I learned a few new terms including contralateral and antlantooccipital from this video. It is so cool to learn about just how many muscles go into the simple movement of moving your head side to side.

@AlexisRomo001 6 месяцев назад

I feel like this video went way more in-depth with the anatomy of the head than my anatomy course did. I also liked your visual examples, it helped me visualize where the muscles were in my own body and I was able to palpate the larger muscles.

@chaseplott3199 Год назад

I really enjoyed the anatomy portion of this video. The diagrams had a lot of good visuals!

@RoryPeters 6 месяцев назад

Seeing how some of the muscle names have the origin and insertion in the name like sternocleidomastoid helped my understand where they are. That made me enjoy learning about the muscles even more

@isabellecousineau302 2 года назад

I liked how you went into great detail with everything which helped me understand everything more clearly.

@user-iu5ez9tb4u 6 месяцев назад

I really enjoyed this video, it was far more in depth than both and of my anatomy and physiology classes, it was very interesting to see how each specific muscle correlates to a specific movement, especially the ones I had never even heard of. I really appreciate the attention to detail you had in this video and how you did not just name muscles and their movements but showed how each muscle causes a specific action and why it happened.

@laurenomalley2778 3 года назад

Everything was explained super well in this video and was a great refresher from anatomy!

@emmaforney5084 2 года назад

Muscles have always been a hard topic for me to conquer so I’m excited to learn even more about this in class.

@lisahopoi9029 Год назад

This video helped me realize how helpful it is to actually understand the names of muscles because their name will explain a lot about them like the sternocleidomastoid. Just by knowing the name of the muscle, you know where the muscle's insertion and origin points are.

@kennethvogan4708 2 года назад

There was a lot of muscles to go over, but I think doing the motions as well helped me a lot. Thank you!

@user-jo6gx5yt4q 6 месяцев назад

This video was great in helping me understand the muscles used for expiration and inspiration. It is a lot more in depth than the anatomy that I took at Point Loma, but it was explained very well which allowed me to understand it.

@thelmasepulveda4481 Год назад

Hi Dr. Goodin! Thank you for being very detailed about each muscle and their actions. I really liked how you described the actions muscles do on each side of the body.

@imanibruso3743 Год назад

I learned quite a few new muscles in this video that I had not originally learned in anatomy. They all seem to serve a a role in movement or stability within the body. Your emphasis on the direction of pull and how certain muscles would move/contract was also helpful.