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Supraspinatus
The supraspinatusAbductor Top of shoulder blade; starts arm lift away from body. muscle is a key component of the rotator cuff, a group of muscles and tendons that stabilize the shoulder joint.
Photography, text, and labels by Rob Swatski, Assistant Professor of Biology, Harrisburg Area Community College – York Campus, York, PA.
Use this 3D Viewer to Explore the Muscles of the Upper Body
“Open3DModel – Upper limb – English labels” by Open3D project, Jan Kooloos, RadboudUMC, Eungyeol Lee, LUMC et al, license: CC BY-SA
Origin
The supraspinatus muscle originates from the supraspinous fossaShallow depression above the spine for muscle attachment.. This is a concavity in the scapula’s posterior surface. It is located above the spineProminent ridge on the posterior scapula dividing it into supraspinous and infraspinous fossae. of the scapulaTriangular “shoulder blade” on posterior thorax; connects clavicle and humerus...
Insertion
It inserts into the greater tubercleLarge bump lateral to the head; muscle attachment site. of the humerusLong bone of the upper arm; articulates with scapula at shoulder and radius/ulna at elbow.. This is a prominent bony projection on the lateralAway from the midline of the body. aspect of the upper arm bone.
Actions
Shoulder Abduction
Stabilization of the Shoulder Joint
Interactive Materials
Use this 3D Viewer to Explore the Muscles of the Upper Body
“Open3DModel – Upper limb – English labels” by Open3D project, Jan Kooloos, RadboudUMC, Eungyeol Lee, LUMC et al, license: CC BY-SA
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Upper Arm Muscles
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Calf Muscles
Anterior Thigh Muscles
Posterior Thigh Muscles
Knee Structures
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Back Muscles
Abdominal Muscles
Neck Muscles
Head Muscles
List of terms
- supraspinatus
- anatomy
- supraspinous fossa
- spine
- scapula
- greater tubercle
- humerus
- lateral