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There are over 600 muscles

in your body.

The broad trapezius isamong the most recognizable

of the whole lot!

Lets take a look!

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The trapezius is namedfor its shape, which

resembles a trapezoid.

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Each trapezius extends

across one half of the back.

Together they cover these regions:

Posterior part of the neck

Shoulders

Upper back

Factoid

:Muscle

imbalance

scan

occurw

henall

threesection

softhe

trapeziu

saren

otdeve

lopedcorrec

tly.

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The trapezius is part ofthe posterior thoraxgroup.

The other muscles of this group:

Levator scapulaeSerratus posterior superiorSerratus posterior inferiorLevatores costarum brevis

Levatores costarum longiRhomboideus majorRhomboideus minorQuadratus lumborum

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Hold it right there!Quick review.

Muscles tend to have more mass at the origin.

The structure that the origin is attached to tends

to be moved by the muscle contracting.

We mark origins in red on the skeleton &

use these nifty red pins.

The opposite end of the origin is the insertion.

It tends to move while the structure of the origin is stabilized.

Origins and insertions are where the muscle attaches to a structure,either a bone or other tissue.

Insertions are marked in blue

on the skeleton & use these

cool blue pins.

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The trapezius hasmultiple points of

origin.

The first is the

occipital bone.

See how the red paint and

pins meet the muscle?

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The others are across the thoracicvertebrae of the spine.

The muscle attaches to the spinousprocesses of T01 - T12.

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The trapezius insertsonto the clavicle and the

scapula.

The insertion points on the

scapula are the acromionand the scapular spine.

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Here is the trapezius with all

the muscles that attach to

the scapula or clavicle.

Factoid:The

muscles

inthe

shoulder

regionconn

ectbone

s

oftheax

ialtobon

esofthe

append

icularske

leton.

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The trapezius acts with

other muscles to moveyour head, neck, and

shoulders.

This is Head/Neck Extension.The trapezius works with muscles of

the thorax and spine to tilt your

head back.

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Scapula upward rotation

The trapezius acts to help

the scapula:

Depress

Elevate

Adduct

Rotate

These actions help

move the upperlimbs.

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Learn more about the trapeziuswith 3D Muscle Premium for your

iPad, iPhone, PC or Mac

Watch

the trapezius elevate

the scapula!

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