Pictured above is the infraspinatus. It is one of the rotator cuff muscles, and it rotates your arm away from your chest (toward your back) and lifts your arm away from the side of your torso. (click here for a list of all the muscles)
Click here to see the rotator cuff muscles as a group.
The muscles are layered, showing how some of the muscles are covered by the others. All of the muscles are see-through so that you can appreciate the location and size of each muscle relative to the others.
Individual shoulder, upper back & neck muscles you might be interested in: (any inactive links will be live soon)
Muscles that cross the shoulder joint (attach somewhere in the torso and to the upper arm)
Muscles that attach to the shoulder blade (scapula) & the spine or ribs
- Trapezius
- Levator Scapulae
- Rhomboid Minor
- Rhomboid Major
- Latissimus Dorsi
- Pectoralis Minor
- Serratus Anterior
Muscles that attach to the scapula & the arm
- Deltoids
- Supraspinatus
- Infraspinatus
- Teres Minor
- Subscapularis
- Teres Major
- Triceps (long head)
- Biceps Brachii
- Coracobrachialis
- Latissimus Dorsi
Good luck working out those tight knots.
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