Upper trunk
| 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 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]
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
[edit]
Brachial plexus. Deep dissection.
Brachial plexus. Deep dissection. Anterolateral view
References
[edit]- ↑ Hanna, Amgad (2016). "The SPA arrangement of the branches of the upper trunk of the brachial plexus: a correction of a longstanding misconception and a new diagram of the brachial plexus". Journal of Neurosurgery. 125 (2): 350–354. doi:10.3171/2015.5.JNS15367.
- ↑ Nathan, J.K.; McGillicuddy, J.E. (2015). "Anatomy of the Ventral Rami, Upper Trunk, and Its Divisions and Branches". In R.S. Tubbs; E. Rizk; M.M. Shoja; M. Loukas; N. Barbaro; R.J. Spinner (eds.). Nerves and Nerve Injuries. Academic Press. pp. 527–535. doi:10.1016/B978-0-12-410390-0.00040-8. ISBN 978-0-12-410390-0.
- ↑ Leinberry, C.F.; Wehbé, M.A. (2004). "Brachial plexus anatomy". Hand Clinics. 20 (1): 1–5. doi:10.1016/S0749-0712(03)00088-X.
