Upper subscapular nerve
The upper (superior) subscapular nerve is the first branch of the posterior cord of the brachial plexus. It innervates the superior portion of the subscapularis. The inferior portion of the subscapularis is innervated by the lower subscapular nerve. The upper subscapular nerve contains axons from the ventral rami of the fifth (C5) and sixth (C6) cervical nerves.[1]
| Upper subscapular nerve | |
|---|---|
 Plan of brachial plexus. (Label for upper subscapular nerve at bottom center.) | |
| Details | |
| From | Posterior cord |
| Innervates | Subscapularis |
| Identifiers | |
| Latin | Nervus subscapularis superior |
| FMA | 65304 |
| Anatomical terms of neuroanatomy | |
The axons which form the upper subscapular nerve travel from the ventral rami of C5-C6, join at the upper trunk and move through its posterior division to form the posterior cord along with the other two posterior divisions of the middle and lower trunks. The axons then branch from the posterior cord and form the upper subscapular nerve.
Additional images
Brachial plexus
The right brachial plexus (infraclavicular portion) in the axillary fossa; viewed from below and in front.
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References
- Gray's anatomy : the anatomical basis of clinical practice. Standring, Susan (Forty-first ed.). [Philadelphia]. 2016. ISBN 978-0-7020-5230-9. OCLC 920806541.CS1 maint: others (link)
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