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Intermediate Branch of Posterior Ramus of Fifth Lumbar Nerve (Right)
Nervous System

Intermediate Branch of Posterior Ramus of Fifth Lumbar Nerve (Right)

Ramus posterior intermedius nervi lumbalis quinti

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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.

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