Upper trunk
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.
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Superior trunkSuperior trunk of brachial plexusSuperior trunk of the brachial plexusSuperior trunksSuperior trunks of brachial plexusesSuperior trunks of the brachial plexusesUpper trunk of brachial plexusUpper trunk of the brachial plexusUpper trunksUpper trunks of brachial plexusesUpper trunks of the brachial plexuses
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Axillary nerveBrachial plexusCervical spinal nerve 5Coracobrachialis muscleGuttate psoriasisRadiculopathySubclavian nerveSuperior trunkSuperior trunk of brachial plexusSuperior trunk of the brachial plexusSuperior trunksSuperior trunks of brachial plexusesSuperior trunks of the brachial plexusesSuprascapular nerveUpper subscapular nerveUpper trunk of brachial plexusUpper trunk of the brachial plexusUpper trunksUpper trunks of brachial plexusesUpper trunks of the brachial plexuses
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Upper trunk
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.
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The upper (superior) trunk is ...... derived from the upper trunk.
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BranchFrom
ventral rami of C5 and C6
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BranchTo
anterior division of upper tru ...... ian nerve, suprascapular nerve
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Latin
truncus superior plexus brachialis
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name
Upper trunk
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The upper (superior) trunk is ...... derived from the upper trunk.
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Upper trunk
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name
Upper trunk
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truncus superior plexus brachialis
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