Last update: Dec 4th, 2017

Trapezius Muscle

Trapezius 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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Attachments 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 elevate 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 upwardly 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. Extend 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 adduct (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 upwardly 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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