089 What are the Six Intrinsic Shoulder Muscles?

We now move on to the six intrinsic shoulder muscles. Watch and learn as Leslie enumerates and locates each of them in the body.


Transcript of Today’s Episode

Hello and welcome to another episode of Interactive Biology TV where we’re making Biology fun. My name is Leslie Samuel and in this video, I’m going to be answering a question, and that question is, “What are the six intrinsic shoulder muscles?”

By intrinsic shoulder muscles we mean the muscles that originate on the scapula and then, they insert on the humerus, so they’re connecting the scapula to the humerus. So, what are they?

Muscle number one, that would be the deltoideus muscle or the deltoid muscle. You can see that here in the picture and we’re going to talk about that in the next video, the details, the origins, the insertions, and the actions. We’re going to talk about that in the next video. But, for right now, we’re just listing them out.

Muscle number one, deltoideus.

Muscle number two, supraspinatus, and you can see that coming from the supraspinous fossa and going to the humerus and we’ll talk about those details. But, supraspinatus is muscle number two.

Muscle number three would be infraspinatus. You can see that muscle here. Then, we have teres minor. We also have teres major, and that’s going to be inferior to teres minor. Then, we have subscapularis. That’s on the anterior side of the scapula.

Those are the intrinsic muscles. So just as a review, we have:

  1. Deltoideus
  2. Suprasipnatus
  3. Infraspinatus
  4. Teres Minor
  5. Teres Major
  6. Subscapularis

That’s pretty much it for this video, and as usual, if you want more videos like this and other resources to help make Biology fun, you know what to do. Head on over to the website at Interactive-Biology.com.

This is Leslie Samuel. That’s all for this one and I’ll see you on the next.

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  1. Quick and terse, a very good video. Even better if the arterial and nervous supply of each muscle is included.. or mentioned.

  2. Thank you so mach’ you are so good ! I can remember everything because of your clear explanation.
    In Hebrew you say : MELECH -מלך = KING you are a king in anatomy

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