11 major muscle groups


There are eleven major muscle groups of the body and I’m just going to go through them really quickly I’m not going to talk too much about the names of the muscles, but I want you to get a sense for where they’re located on the body. So: the arm, the leg, and the core. And I’ll write that over here. So… The eleven groups: there are three… actually, four in the arm, three in the leg, and four in the core. And just being familiar with where these muscles are is actually really, really helpful and powerful, because when you go to the gym or you’re working out somewhere else, it’s important to stretch these muscle groups out. It’s important to also focus on each one and try to figure out which one is weak or strong and develop whichever one is imbalanced –that’s if the left and the right side are not equal in their strength. So, it’s important to be aware of where they are located and we’re going to go through that really quickly right now. So, let’s do the arm first. You have first the forearm. You can see that one the best from the front. And above that you have the biceps, that’s about right there. This is your biceps. And behind the biceps –actually on the other side– is the triceps. That’s right there. And above both the biceps and the triceps is the shoulder. And actually, I’m going to draw that right there. You actually see it from the front and the back. I’m just going to draw it right there, just for simplicity. So those are the four arm muscles and now let’s just jump down to the leg and put in the quads. This is your quadriceps. And this is actually called the quadriceps because that’s just four different muscles working together. And below the quads, or actually on the other side of the quads, rather, is your hamstring. And right here is your hamstring. And I want to get a special kind of shout-out to the hamstring because it does a lot of work and a lot of people forget to stretch it out; and you can often get in a lot of pain for not having a good, stretched-out hamstring. Below it is the calf. There’s the calf… and the calf is actually sitting on the opposite side of the bones in the lower leg –the tibia and the fibula– which is why it’s so bony on the front part of your lower leg, but on the back it’s very meaty and “muscle-y.” So you have three leg muscles there. Now lets put in the core muscles. So you have, let’s do the front first. So right here is where people talk about getting a six-pack –your abs. That’s an important muscle group. It helps you do sit-ups. And above it is your chest, so right here is your chest. And…there are two in the front… and, similarly, there are two in the back. And so the back ones –let me do in yellow– are your trapezius. And trapezius I think comes down like a diamond, almost… kind of like that. And it helps with the neck and upper back. And then, almost like you have wings in a way, you have two other muscles –or actually, another muscle with two sides on it– called latissimus dorsi. It’s actually kind of a large, spread-out muscle –and I’m not drawing all of it– but basically it kind of spreads all the way to your back and it is the major muscle of your back. So when people say, you know, “I threw out my back.” Often times, if it’s the lower back, they’re talking about their latissimus dorsi. And that means that we have now our four core muscles showing up here as well. So counting them out we’ve got our eleven muscle groups. And so just to, again, go over it very quickly. We’ve got one shoulder, biceps, forearm, and triceps. In our leg we have our quad, our hamstring, and our calf. And then in the core of our body we have our abs, our chest, our upper back –which would be the trapezius– and the lower back –which is the latissimus dorsi–and there are eleven groups.

55 thoughts on “11 major muscle groups

  1. What about the glutes? and don't forget that the bicep muscle has two heads, triceps have three heads, obliques are also part of the core, and that there is an upper and a lower pectoral muscle.

  2. What about the glutes and erector spinae. Pretty important. Oh and pretty sure "when people talk about throwing out there lower back they're" talking about their erector spinae muscle if they are talking about a muscle at all. Not a doctor, just saying.

  3. we are here to learn from khan academy, it's good to let the question out of the way instead of wondering, I m not going to sit there and think of a question that will not get me flame on like some noobs.

  4. Youre pretty good dude.

    Although I would have put a couple more muscles. Especially antagonist muscles to the forearm and calf.

  5. I'm very disappointed in this video.. I would never recommend anyone to watch or rely on this video for accurate information about anatomy. It's pathetic..

  6. The brain is composed of several different types of cells that can be categorized as Neurons. They have significantly different structure compared to musculoskeletal cells. Neurons are designed to transfer electricity, while muscle cells are designed to physically shorten and lengthen. in the simplest analogy a Neuron is an electrical wire, and a muscle cell is 100 guys pulling on a rope like a tug of war.

  7. Glad I stumbled upon this movie. Fall in love with You tube for this sort of material!

    My homeboy was formerly bullied. He said he was intending to grow muscle mass. I chuckled at him because I didn't think he would for a second…. Right up until before long he added 40lbs of pure muscle. He made use of the Muscle Building Bible – look in Google. No-one dares to intimidate the man these days. 🙂

    I subscribed the other day. See exactly what goes on. Plus this guys emails are fascinating…

  8. If you are looking to gain some muscle, you should definitely take a look on Google for "Oak Muscle Method". You are surely going to get the body you want.

  9. This is a great video although I would not rely on it. The chest should be called Pectorals, shoulder would be called deltoids, calf should be called gastrocnemius and also you missed out gluteas maximus (glutels)

  10. you didn't mention the glutimus maximus, the largest muscles in the whole body… school boy mistake

Leave a Reply

Your email address will not be published. Required fields are marked *