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Upper trunk

Part of the human anatomy

Field	Value
Name	Upper trunk
Latin	truncus superior plexus brachialis
BranchFrom	Ventral rami of C5 and C6
BranchTo	Anterior division of upper trunk, posterior division of upper trunk, subclavian nerve, suprascapular nerve

The upper (superior) trunk is part of the brachial plexus. It is formed by joining of the ventral rami of the fifth (C5) and sixth (C6) cervical nerves. The upper trunk divides into an anterior and posterior division.

The branches of the upper trunk from proximal to distal are:

subclavian nerve (C5-C6)
suprascapular nerve (C5-C6)
anterior division of upper trunk (C5-C6, forms part of lateral cord)
posterior division of upper trunk (C5-C6, forms part of posterior cord)

The axillary, radial, musculocutaneous and median nerves all contain axons derived from the upper trunk.

Additional images

File:Slide1cord.JPG|Brachial plexus. Deep dissection. File:Slide1ecc.JPG|Brachial plexus. Deep dissection. Anterolateral view

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

nerves-of-the-upper-limb

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