Skip to main content

Unfortunately we don't fully support your browser. If you have the option to, please upgrade to a newer version or use Mozilla Firefox, Microsoft Edge, Google Chrome, or Safari 14 or newer. If you are unable to, and need support, please send us your feedback.

Elsevier
Publish with us
Intermediate Branch of Posterior Ramus of Fourth Lumbar Nerve (Left)
Nervous System

Intermediate Branch of Posterior Ramus of Fourth Lumbar Nerve (Left)

Ramus posterior intermedius nervi lumbalis quarti

Read more

Origin

After the posterior ramus of the fourth lumbar nerve (L4) has traversed through the intertransverse ligament and medial intertransverse muscle, it divides into medial, intermediate, and lateral 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.

Learn more about this topic from other Elsevier products

Lumbar Nerves

ScienceDirect image

The ileoinguinal nerve arises from the first lumbar nerve, giving branches to the obliquus internus muscle and to the skin covering the mons pubis and labia majora.

Explore on ScienceDirect(opens in new tab/window)

Complete Anatomy

The world's most advanced 3D anatomy platform

Complete Anatomy