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 | |
| Latin | intumescentia lumbosacralis |
| TA98 | A14.1.02.003 |
| TA2 | 6051 |
| FMA | 74895 |
| Anatomical terminology | |
It commences about the level of T11 and ends at L2, 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
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Spinal cord. Spinal membranes and nerve roots. Deep dissection. Posterior view.
References
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This article incorporates text in the public domain from page 752 of the 20th edition of Gray's Anatomy (1918)
External links
edit- lesson6spinalcord&coverings at The Anatomy Lesson by Wesley Norman (Georgetown University)
- Anatomy photo:02:08-0102 at the SUNY Downstate Medical Center - "Vertebral Canal and Spinal Cord: Regions of the Spinal Cord"
- Atlas image: n3a5p3 at the University of Michigan Health System - "Spinal Cord, Fetus, Posterior View"
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