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Photography, text, and labels by Rob Swatski, Assistant Professor of Biology, Harrisburg Area Community College – York Campus, York, PA.
Trapezius Origin
The superiorAbove or toward the upper part of the body. fibers originate from the occipitalPosterior and base of the skull; curves under to form the back of the head. bone, a ligament in the neckNarrow region just below the head; common fracture site., and the spinous processes of C7 to T12.
Trapezius Insertion
The fibers converge and insert onto the clavicleS-shaped collarbone; connects sternum to scapula; helps brace the shoulder., the acromion processLarge, flat projection forming the tip of the shoulder; articulates with clavicle. of the scapulaTriangular “shoulder blade” on posterior thorax; connects clavicle and humerus., and the spineProminent ridge on the posterior scapula dividing it into supraspinous and infraspinous fossae. of the scapula.
Trapezius Actions
Shoulder Elevation and Depression
Head and Neck Posture
Scapular Retraction and Protraction
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Identify More Muscles
Link to more Muscle Identification
Upper Arm Muscles
Forearm Muscles
Calf Muscles
Anterior Thigh Muscles
Posterior Thigh Muscles
Knee Structures
Chest Muscles
Back Muscles
Abdominal Muscles
Neck Muscles
Head Muscles
List of terms
- superior
- occipital
- neck
- clavicle
- acromion process
- scapula
- spine