Lumbar enlargement

The lumbar enlargement (or lumbosacral enlargement) is a widened area of the spinal cord that gives attachment to the nerves which supply the lower limbs.

Lumbar enlargement
Diagrams of the medulla spinalis. (Cervical enlargement labeled at center right.)
Details
Identifiers
Latinintumescentia lumbosacralis
TAA14.1.02.003
FMA74895
Anatomical terminology

It commences about the level of T11 and ends at S2, and reaches its maximum circumference, of about 33 mm. Inferior to the lumbar enlargement is the conus medullaris.[1]

An analogous region for the upper limbs exists at the cervical enlargement.

Additional images

References

This article incorporates text in the public domain from page 752 of the 20th edition of Gray's Anatomy (1918)


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