Intermediate Branch of Posterior Ramus of Fifth Lumbar Nerve (Right)
Ramus posterior intermedius nervi lumbalis quinti
Read moreQuick Facts
Origin: Posterior ramus of the fifth lumbar nerve (L5).
Course: Continues dorsally and caudally.
Branches: None.
Supply: Lumbar fibers of longissimus thoracis muscle.
Related parts of the anatomy
Origin
After the posterior ramus passes over the ala of the sacrum, it divides into medial and intermediate branches.
Course
The intermediate branch passes dorsally and caudally through the intertransverse space and enters the longissimus thoracis muscle. It remains intermuscular (Bogduk, Wilson and Tynan, 1982).
Branches
There are no named branches.
Supplied Structures & Function
The intermediate branch supplies the lumbar fibers of longissimus thoracis muscle.
References
Bogduk, N., Wilson, A. S. and Tynan, W. (1982) 'The human lumbar dorsal rami', J Anat, 134(Pt 2), pp. 383-97.
