For Providers -- Atlas of Human Anatomy

The spinal cord lying in its opened dura mater along with the medulla oblongata and the roots of the spinal nerves passing through the dura matter. Seen from the dorsal surface.

Translated by: Ronald A. Bergman, PhD and Adel K. Afifi, MD, MS
Peer Review Status: Internally Peer Reviewed

A. Medulla oblongata.
B. Spinal cord, cervical portion.
C. Spinal cord, thorax portion.
D. Spinal cord, lumbar portion.

a) Fourth ventricle.
b) Cervical enlargement of spinal cord.
c) Lumbar enlargement of spinal cord.
d) Conus medullaris.
e) Filum terminale.
f) Posterior median fissure.
g) Denticulate ligament.

2 – 8. cervical nerves (8).
9 – 20. thoracic nerves (12).
21 – 25. lumbar nerves (5).
26 – 30. sacral nerves (5).
31. coccygeal nerve.
32. accessory nerve passes through jugular foramen.
33. vagus nerve passes through jugular foramen.
34. glossopharyngeal nerve passes through jugular foramen.