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There are over 600muscles

in your body.

The broad trapeziusisamong 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 trapeziusextends

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 massat the origin.

The structure that the originis 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.

Originsand insertionsare where the muscle attachesto 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 hasmultiplepoints 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 clavicleand the

scapula.

The insertion points on the

scapula are the acromionand the scapular spine.

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The trapezius is innervated by the

accessory cranial nerve(CN XI).

The cranial nervesare a group

of 12 paired nerves that connect the

muscles and organs of the head and

body directlyto the brain.

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Here is the trapezius with all

the muscles that attach to

the scapulaor clavicle.

Factoid:The

muscles

inthe

shoulder

regionconn

ectbone

s

oftheax

ialtobon

esofthe

append

icularske

leton.

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The trapezius actswith

other muscles to moveyour head, neck, and

shoulders.

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

the thoraxand spineto tilt your

headback.


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Scapula upward rotation

The trapeziusacts to help

the scapula:

Depress

Elevate

Adduct

Rotate

These actions help

move the upperlimbs.

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Watchthe trapezius elevate

the scapula!
http://ow.ly/kRs42http://www.visiblebody.com/http://ow.ly/kRs42

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All the images and text in this eBook camefrom Visible Bodys Muscle Premium appan

encyclopedic anatomical reference for humanmusculature.

MUSCLEPREMIUM

Content in the app includes:

600+ muscles, 200+ bones, peripheral nerves, andligaments all rendered in interactive 3D, as well as dozens

of interactive muscle action animations.

Functionality that allows you to rotate, zoom in/out, pan,hide, and add structures to see the anatomy from anyangle. Customize and save views.

Dozens of quizzes to test your knowledge.

Muscle Premium is available for iOS, PC, Mac, andAndroid.

Site Licenses are available for Muscle Premium. Learn more here.
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