Lab 1 - Module 2: Axilla - Page 3 of 8
Brachial Plexus
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Step 26
The three posterior divisions unite to form the
posterior cord
.
Step 27
The anterior divisions of the superior and middle trunks unite to form the
lateral cord
.
Step 28
The anterior division of the inferior trunk continues as the
medial cord
.
Step 29
Observe that the cords of the brachial plexus derive their names by virtue of their relationship to the
axillary artery
.
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