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Trapezius Muscle

image descriptionTrapezius Muscle

Posterior view labeled: Trapezius, deltoid, triceps brachii, latissimus dorsi
Posterior view labeled: Levator scapular, supraspinatus, infraspinatus
Posterior view labeled: Teres minor and major
Posterior view labeled: Rhomboideus minor and major
Posterior view labeled: Trapezius muscle
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image descriptionAttachments of Trapezius Muscle: Origin & Insertion

Origin: (proximal attachments)
a. Medial superior nuchal line and external protuberance of occipital bone, ligamentum nuchae and spinous process of C7-T12.

Insertion: (distal attachments)
a. Lateral clavicle, acromion and spine of scapula.

Posterior view labeled: Trapezius muscle
Posterior view labeled: Origin and Insertion
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Actions on the shoulder (scapula):

a. Upper fibers image descriptionelevate scapula.

Fifth image in animation of a figure with an elevated scapula
Fourth image in animation of a figure with an elevated scapula
Third image in animation of a figure with an elevated scapula
Second image in animation of a figure with an elevated scapula
First image in animation of a figure with an elevated scapula

b. Upper fibers image descriptionupwardly rotate scapula.

Fifth image in animation of a figure with upwardly rotated scapula
Fourth image in animation of a figure with upwardly rotated scapula
Third image in animation of a figure with upwardly rotated scapula
Second image in animation of a figure with upwardly rotated scapula
First image in animation of a figure with upwardly rotated scapula

c. image descriptionExtend neck.

First image in animation of a figure with extended neck
Fourth image in animation of a figure with extended neck
Third image in animation of a figure with extended neck
Second image in animation of a figure with extended neck

d. Middle fibers image descriptionadduct (retract) scapula.

Fourth image in animation of a figure with adducted scapula
Third image in animation of a figure with adducted scapula
Second image in animation of a figure with adducted scapula
First image in animation of a figure with adducted scapula

e. Lower fibers scapula.

Fourth image in animation of a figure with depressed scapula
Third image in animation of a figure with depressed scapula
Second image in animation of a figure with depressed scapula

f. Lower fibers help upper fibers image descriptionupwardly scapula.

First image in animation of a figure with upwardly rotated scapula
Fifth image in animation of a figure with upwardly rotated scapula
Fourth image in animation of a figure with upwardly rotated scapula
Third image in animation of a figure with upwardly rotated scapula
Second image in animation of a figure with upwardly rotated scapula

Innervation of Trapezius Muscle:

  • C3, C4 and accessory cranial nerve (XI).

An Overview of the Trapezius Muscle

Posterior view labeled: Trapezius, deltoid, teres minor and major, triceps brachii, latissimus dorsi
Posterior view labeled: Levator scapulae, trapezius, deltoid, teres minor and major, latissimus dorsi, triceps brachii
Posterior view labeled: Levator scapulae, trapezius, deltoid, teres minor and major, latissimus dorsi, triceps brachii
Posterior view labeled: Levator scapulae, supraspinatus, teres major and minor, triceps brachii, latissimus dorsi
Posterior view labeled: Levator scapulae, infraspinatus, teres major, triceps brachii, latissimus dorsi
Posterior view labeled: Levator scapulae, rhomboideus major and minor, teres major, latissimus dorsi, triceps brachii
Posterior view labeled: Levator scapulae, rhomboideus minor and major, teres major, latissimus dorsi
Posterior view labeled: Levator scapulae, rhomboideus minor and major, teres major
Posterior view labeled: Levator scapulae, rhomboideus minor and major, teres minor
Posterior view labeled: Trapezius, rhomboideus minor and major, teres major, latissimus dorsi
Posterior view labeled: Rhomdoideus minor and major
Posterior view labeled: Rhomdoideus minor
Posterior view labeled: Trapezius
Posterior view labeled: Insertion and origin
Posterior view labeled: Trapezius, deltoid, teres minor and major, triceps brachii, latissimus dorsi
Posterior view labeled: Levator scapulae, trapezius, deltoid, teres minor and major, latissimus dorsi, triceps brachii
Posterior view labeled: Levator scapulae, trapezius, deltoid, teres minor and major, latissimus dorsi, triceps brachii
Test yourself while observing the trapezius muscle anatomy
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