X CLOSE

Cervical meninges, spinal cord and nerve roots dissected from behind

Cervical spinal cord and denticulate ligaments

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Image #217-5
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Cervical meninges, spinal cord and nerve roots dissected from behind
Cervical spinal cord and denticulate ligaments
The arachnoid membrane has been cut away to expose the cervical part of the spinal cord in situ. The small nodules located along the spinal roots of the accessory nerves (19) were identified microscopically as fibromata.
1 . Cerebellar tonsil
2 . Medulla oblongata
3 . Margin of foramen magnum
4 . Upper pointer: Posterior inferior cerebellar artery Lower pointer: Vertebral artery
5 . Suboccipital nerve
6 . Posterior arch of atlas (cut across)
7 . Dorsal roots cervical nerve II
8 . Obliquus capitis inferior muscle
9 . Greater occipital nerve
10 . Third occipital nerve
11 . Muscular branch of cervical nerve III
12 . Splenius capitis muscle
13 . Posterior median sulcus
14 . Posterior intermediate sulcus
15 . Posterior lateral sulcus
16 . Dorsal roots cervical nerve VI
17 . Accessory filament of dorsal root which bifurcates to contribute to two cervical nerves
18 . Dura mater
19 . Spinal roots accessory nerve (XI)
20 . Major posterior rectus capitis muscle
21 . Posterior atlanto-occipital membrane (cut across)
22 . Posterior spinal artery
23 . Semispinalis capitis muscle (cut across)
24 . Denticulate ligament
25 . Upper pointer: Posterior internal vertebral venous plexus Lower pointer: Dura mater
26 . Arch of vertebra C. IV (cut across)
27 . Posterior external vertebral venous plexus
28 . Multifidus muscle (cut across)