Upper trunk
Part of the human anatomy
From Wikipedia, the free encyclopedia
The upper (superior) trunk is a part of the human nervous system, specifically the brachial plexus.[1] It is formed by joining of the ventral rami of the fifth (C5) and sixth (C6) cervical nerves.[2] The upper trunk divides into an anterior and posterior division.[3]
FromVentral rami of C5 and C6
ToAnterior division of upper trunk, posterior division of upper trunk, subclavian nerve, suprascapular nerve
Latintruncus superior plexus brachialis
| Upper trunk | |
|---|---|
| Details | |
| From | Ventral rami of C5 and C6 |
| To | Anterior division of upper trunk, posterior division of upper trunk, subclavian nerve, suprascapular nerve |
| Identifiers | |
| Latin | truncus superior plexus brachialis |
| TA98 | A14.2.03.004 |
| TA2 | 6398 |
| FMA | 65216 |
| Anatomical terms of neuroanatomy | |
The branches of the upper trunk from proximal to distal are:[citation needed]
- 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.[citation needed]
Additional images
Brachial plexus. Deep dissection.
Brachial plexus. Deep dissection. Anterolateral view
